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Maths-

General

Easy

Question

If $A plus cos invisible function application B plus cos invisible function application C equals 0$ then $cos invisible function application 3 straight A plus cos invisible function application 3 straight B plus cos invisible function application 3 straight C$

$4 \cos A \cos 3 B \cos 3 C$
$12 \cos A \cos B \cos C$
$8 \cos A \cos B \cos C$
$10 \cos A \cos B \cos C$

The correct answer is: $12 cos invisible function application A cos invisible function application B cos invisible function application C$

$G i v e n comma cos A plus cos B plus cos C equals 0 T o space f i n d comma cos 3 A plus cos 3 B plus cos 3 C equals open parentheses 4 cos cubed A minus 3 cos A close parentheses plus open parentheses 4 cos cubed B minus 3 cos B close parentheses plus open parentheses 4 cos cubed C minus 3 cos C close parentheses equals 4 open parentheses cos cubed A plus cos cubed B plus cos cubed C close parentheses minus 3 open parentheses cos A plus cos B plus cos C close parentheses open parentheses because cos A plus cos B plus cos C equals 0 close parentheses equals 4 open parentheses cos cubed A plus cos cubed B plus cos cubed C close parentheses minus 3 open parentheses 0 close parentheses equals 4 open parentheses cos cubed A plus cos cubed B plus cos cubed C close parentheses open parentheses I f space a plus b plus c equals 0 comma space t h e n space a cubed plus b cubed plus c cubed equals 3 a b c close parentheses equals 4 open parentheses 3 cos A cos B cos C close parentheses equals 12 cos A cos B cos C$

Related Questions to study

The value of $fraction numerator 3 plus cot invisible function application 76 to the power of ring operator cot invisible function application 16 to the power of ring operator over denominator cot invisible function application 76 to the power of ring operator plus cot invisible function application 16 to the power of ring operator end fraction$ is

The value of $fraction numerator 3 plus cot invisible function application 76 to the power of ring operator cot invisible function application 16 to the power of ring operator over denominator cot invisible function application 76 to the power of ring operator plus cot invisible function application 16 to the power of ring operator end fraction$ is

If are four angles then $sin invisible function application left parenthesis A minus B right parenthesis times cos invisible function application left parenthesis A plus B right parenthesis plus sin invisible function application left parenthesis B minus C right parenthesis cos invisible function application left parenthesis B plus C right parenthesis plus sin invisible function application left parenthesis C minus D right parenthesis$ . $cos invisible function application left parenthesis C plus D right parenthesis plus sin invisible function application left parenthesis D minus A right parenthesis times cos invisible function application left parenthesis D plus A right parenthesis equals$

If are four angles then $sin invisible function application left parenthesis A minus B right parenthesis times cos invisible function application left parenthesis A plus B right parenthesis plus sin invisible function application left parenthesis B minus C right parenthesis cos invisible function application left parenthesis B plus C right parenthesis plus sin invisible function application left parenthesis C minus D right parenthesis$ . $cos invisible function application left parenthesis C plus D right parenthesis plus sin invisible function application left parenthesis D minus A right parenthesis times cos invisible function application left parenthesis D plus A right parenthesis equals$

If $tan space theta subscript 1 comma tan space theta subscript 2 comma tan space theta subscript 3$ and $tan space theta subscript 4$ are the roots of the equation $x to the power of 4 minus x cubed sin space 2 beta plus x squared cos space 2 beta minus x cos space beta minus sin space beta equals 0$ then $tan space open parentheses theta subscript 1 plus theta subscript 2 plus theta subscript 3 plus theta subscript 4 close parentheses$ is equal to

If $tan space theta subscript 1 comma tan space theta subscript 2 comma tan space theta subscript 3$ and $tan space theta subscript 4$ are the roots of the equation $x to the power of 4 minus x cubed sin space 2 beta plus x squared cos space 2 beta minus x cos space beta minus sin space beta equals 0$ then $tan space open parentheses theta subscript 1 plus theta subscript 2 plus theta subscript 3 plus theta subscript 4 close parentheses$ is equal to

parallel

Formula of the following silicate anion is

Formula of the following silicate anion is

chemistry-General

Sulphide mineral + $CN to the power of minus rightwards arrow with straight O subscript 2 on top open square brackets M left parenthesis CN right parenthesis subscript 2 close square brackets to the power of minus 2 open square brackets M left parenthesis CN right parenthesis subscript 2 close square brackets to the power of minus plus Zn not stretchy rightwards arrow open square brackets Zn left parenthesis CN right parenthesis subscript 4 close square brackets to the power of 2 minus end exponent plus 2 M$ M
can be

Sulphide mineral + $CN to the power of minus rightwards arrow with straight O subscript 2 on top open square brackets M left parenthesis CN right parenthesis subscript 2 close square brackets to the power of minus 2 open square brackets M left parenthesis CN right parenthesis subscript 2 close square brackets to the power of minus plus Zn not stretchy rightwards arrow open square brackets Zn left parenthesis CN right parenthesis subscript 4 close square brackets to the power of 2 minus end exponent plus 2 M$ M
can be

chemistry-General

The adjoining figure gives the road plan of lanes connecting two parallel roads AB and FJ Aman walking on the road AB takes a turn at random to reach the road FJ It is known that he reaches the road FJ from $O$ by taking a straight line The chance that he moves on a straight line from the road AB to the road FJ is.

The adjoining figure gives the road plan of lanes connecting two parallel roads AB and FJ Aman walking on the road AB takes a turn at random to reach the road FJ It is known that he reaches the road FJ from $O$ by taking a straight line The chance that he moves on a straight line from the road AB to the road FJ is.

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If A,B,C re in A.P and $B equals pi over 4$ then $tan space A tan space B tan C$ =

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If $alpha comma beta comma gamma$ do not differ by a multiple of $straight pi$ and if $fraction numerator cos space left parenthesis alpha plus theta right parenthesis over denominator sin space left parenthesis beta plus gamma right parenthesis end fraction equals fraction numerator cos begin display style space end style left parenthesis beta plus theta right parenthesis over denominator sin begin display style space end style left parenthesis gamma plus alpha right parenthesis end fraction equals fraction numerator cos begin display style space end style left parenthesis gamma plus theta right parenthesis over denominator sin begin display style space end style left parenthesis alpha plus beta right parenthesis end fraction equals k$ Then k equals

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From the figure AOC=

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In $capital delta$ ABC, D,E,F are the midpoints of sides BC, CA and AB respectively then ar $open parentheses B D E F close parentheses equals$

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parallel

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