Solution for the question - cos^(2)(a-b)+cos^(2)b-2cos(a-b)cos a cos b= cos^(2) '/> cos^(2)a '/> 5_(17)^(2)3 '/> 5ieta^(2)a '/>

Maths-

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Easy

Question

$cos squared space left parenthesis A minus B right parenthesis plus cos squared space B minus 2 cos space left parenthesis A minus B right parenthesis cos A cos space B equals$

$\sin^{2} A$
$\sin^{2} B$
$\cos^{2} A$
$\cos^{2} B$

The correct answer is: $sin squared space straight A$

$table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell text Take end text A equals 60 to the power of ring operator B equals 45 to the power of ring operator left parenthesis o r right parenthesis end cell row cell cos squared space A cos squared space B plus sin squared space A sin squared space B end cell row cell space of 1em plus 2 cos subscript A space A cos space B sin space A sin space B end cell row cell plus cos squared space B minus 2 cos squared space A cos squared space B end cell row cell space of 1em minus 2 cos space A cos space B sin space A sin space B end cell row cell equals sin squared space A sin squared space B plus cos squared space B minus cos squared space A cos squared space B end cell row cell equals sin squared space A sin squared space B plus sin squared space A cos squared space B equals sin squared space A end cell end table$

$text If end text cos text end text alpha plus cos space beta equals 0 equals sin space alpha plus sin space beta text then end text cos text end text left parenthesis alpha minus beta right parenthesis equals$

Maths-General

General

Maths-

$text If end text cos text end text left parenthesis straight A minus straight B right parenthesis equals 3 divided by 5 text and end text tan space Atan space straight B equals 2 text end text$ then which one of the following is true

Maths-General

General

Maths-

$cos space alpha sin space left parenthesis beta minus gamma right parenthesis plus cos space beta sin space left parenthesis gamma minus alpha right parenthesis plus cos space gamma sin space left parenthesis alpha minus beta right parenthesis equals$

Maths-General

General

Maths-

$text If tan end text straight alpha equals 1 half text and end text sin text end text straight beta equals fraction numerator 1 over denominator square root of straight pi end fraction text where end text 0 less than straight alpha subscript 4 straight beta less than straight pi over 2 text then end text 2 straight beta text is equal to end text$

Maths-General

General

Maths-

$text If end text cos text end text straight A equals negative 3 over 5 comma sin space straight B equals 7 over 25 text and end text 90 to the power of ring operator less than straight A less than 180 to the power of ring operator comma 0 to the power of ring operator less than straight B less than 90 to the power of ring operator text then end text tan text end text left parenthesis straight A plus straight B right parenthesis equals$

Maths-General

General

Maths-

$text If end text cos text end text alpha equals negative 12 over 13 comma cot space beta equals 24 over 7 comma 90 to the power of ring operator less than alpha less than 180 to the power of ring operator$ and $180 to the power of ring operator less than straight beta less than 270 to the power of ring operator$ then the quadrant in which $alpha plus beta$ lies

Maths-General

General

Maths-

$text If end text tan text end text straight A equals 17 over 18 comma tan space straight B equals 1 over 35 text then end text cos text end text left parenthesis straight A plus straight B right parenthesis equals$

Maths-General

General

Maths-

$text If end text straight A comma straight B text are acute angles, end text sin space straight A equals 4 over 5 comma tan invisible function application straight B equals 5 over 12 text then end text sin text end text left parenthesis straight A plus straight B right parenthesis equals$

Maths-General

General

Maths-

$text In a end text straight triangle ABC comma straight A text is obtuse, end text sin invisible function application straight A equals 3 over 5 comma sin space straight B equals 5 over 13$ then sin c=

Maths-General

General

Maths-

$text If end text sin text end text straight A equals fraction numerator 1 over denominator square root of 2 straight pi end root end fraction comma sin space straight B equals fraction numerator 1 over denominator square root of 5 end fraction comma 0 less than straight A comma straight B less than straight pi over 4 text then end text straight A plus straight B equals$

Maths-General

General

Maths-

$text If end text tan text end text straight A equals fraction numerator sin begin display style space end style straight B over denominator 1 minus xcos space straight B end fraction text and end text tan text end text straight B equals fraction numerator ysin space straight A over denominator 1 minus ycos space straight A end fraction text then end text fraction numerator sin begin display style text end text end style straight A over denominator sin begin display style text end text end style straight B end fraction equals$

Maths-General

General

Maths-

$fraction numerator cos space x over denominator cos space left parenthesis x minus 2 y right parenthesis end fraction equals lambda not stretchy rightwards double arrow tan space left parenthesis x minus y right parenthesis tan space y equals$

Maths-General

General

Maths-

In a $ΔABC$ , if $cos space Acos space Bcos space straight C equals 1 divided by 3$ , then the value of tan A tan B +tan B tan C +tan C tan A is

Maths-General

General

Maths-

$Error converting from MathML to accessible text.$

Maths-General

General

Maths-

$text If end text x squared plus y squared plus z squared equals r squared$ and $tan space straight alpha equals xy over straight x comma tan space straight beta equals straight y over xs comma tan space straight gamma equals xe over straight y$ then $straight alpha plus straight beta plus straight gamma equals$

Maths-General

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$cos squared space left parenthesis A minus B right parenthesis plus cos squared space B minus 2 cos space left parenthesis A minus B right parenthesis cos A cos space B equals$

$\sin^{2} A$
$\sin^{2} B$
$\cos^{2} A$
$\cos^{2} B$

The correct answer is: $sin squared space straight A$

Related Questions to study

$text If end text cos text end text alpha plus cos space beta equals 0 equals sin space alpha plus sin space beta text then end text cos text end text left parenthesis alpha minus beta right parenthesis equals$

$text If end text cos text end text alpha plus cos space beta equals 0 equals sin space alpha plus sin space beta text then end text cos text end text left parenthesis alpha minus beta right parenthesis equals$

$text If end text cos text end text left parenthesis straight A minus straight B right parenthesis equals 3 divided by 5 text and end text tan space Atan space straight B equals 2 text end text$ then which one of the following is true

$text If end text cos text end text left parenthesis straight A minus straight B right parenthesis equals 3 divided by 5 text and end text tan space Atan space straight B equals 2 text end text$ then which one of the following is true

$cos space alpha sin space left parenthesis beta minus gamma right parenthesis plus cos space beta sin space left parenthesis gamma minus alpha right parenthesis plus cos space gamma sin space left parenthesis alpha minus beta right parenthesis equals$

$cos space alpha sin space left parenthesis beta minus gamma right parenthesis plus cos space beta sin space left parenthesis gamma minus alpha right parenthesis plus cos space gamma sin space left parenthesis alpha minus beta right parenthesis equals$

$text If end text tan text end text straight A equals 17 over 18 comma tan space straight B equals 1 over 35 text then end text cos text end text left parenthesis straight A plus straight B right parenthesis equals$

$text If end text tan text end text straight A equals 17 over 18 comma tan space straight B equals 1 over 35 text then end text cos text end text left parenthesis straight A plus straight B right parenthesis equals$

$text If end text straight A comma straight B text are acute angles, end text sin space straight A equals 4 over 5 comma tan invisible function application straight B equals 5 over 12 text then end text sin text end text left parenthesis straight A plus straight B right parenthesis equals$

$text If end text straight A comma straight B text are acute angles, end text sin space straight A equals 4 over 5 comma tan invisible function application straight B equals 5 over 12 text then end text sin text end text left parenthesis straight A plus straight B right parenthesis equals$

$text In a end text straight triangle ABC comma straight A text is obtuse, end text sin invisible function application straight A equals 3 over 5 comma sin space straight B equals 5 over 13$ then sin c=

$text In a end text straight triangle ABC comma straight A text is obtuse, end text sin invisible function application straight A equals 3 over 5 comma sin space straight B equals 5 over 13$ then sin c=

$fraction numerator cos space x over denominator cos space left parenthesis x minus 2 y right parenthesis end fraction equals lambda not stretchy rightwards double arrow tan space left parenthesis x minus y right parenthesis tan space y equals$

$fraction numerator cos space x over denominator cos space left parenthesis x minus 2 y right parenthesis end fraction equals lambda not stretchy rightwards double arrow tan space left parenthesis x minus y right parenthesis tan space y equals$

In a $ΔABC$ , if $cos space Acos space Bcos space straight C equals 1 divided by 3$ , then the value of tan A tan B +tan B tan C +tan C tan A is

In a $ΔABC$ , if $cos space Acos space Bcos space straight C equals 1 divided by 3$ , then the value of tan A tan B +tan B tan C +tan C tan A is

$Error converting from MathML to accessible text.$

$Error converting from MathML to accessible text.$

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Related Questions to study

then which one of the following is true

then which one of the following is true

and then the quadrant in which lies

and then the quadrant in which lies

then sin c=

then sin c=

In a , if , then the value of tan A tan B +tan B tan C +tan C tan A is

In a , if , then the value of tan A tan B +tan B tan C +tan C tan A is

and then

and then

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The correct answer is: $sin squared space straight A$

$text If end text cos text end text left parenthesis straight A minus straight B right parenthesis equals 3 divided by 5 text and end text tan space Atan space straight B equals 2 text end text$ then which one of the following is true

$text If end text cos text end text left parenthesis straight A minus straight B right parenthesis equals 3 divided by 5 text and end text tan space Atan space straight B equals 2 text end text$ then which one of the following is true

$text In a end text straight triangle ABC comma straight A text is obtuse, end text sin invisible function application straight A equals 3 over 5 comma sin space straight B equals 5 over 13$ then sin c=

$text In a end text straight triangle ABC comma straight A text is obtuse, end text sin invisible function application straight A equals 3 over 5 comma sin space straight B equals 5 over 13$ then sin c=

In a $ΔABC$ , if $cos space Acos space Bcos space straight C equals 1 divided by 3$ , then the value of tan A tan B +tan B tan C +tan C tan A is

In a $ΔABC$ , if $cos space Acos space Bcos space straight C equals 1 divided by 3$ , then the value of tan A tan B +tan B tan C +tan C tan A is