Maths-
General
Easy
Question
If the sides be a, b, c then 
=
- c / r 3
- c / r 2
- c / r
- None of these
The correct answer is: c / r 3
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In any ABC, cosA + cosB + cosC =
In any ABC, cosA + cosB + cosC =
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In any ABC, sinA + sinB + sinC =
In any ABC, sinA + sinB + sinC =
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In an equilateral triangle the in-radius and the circum-radius are connected by -
In an equilateral triangle the in-radius and the circum-radius are connected by -
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If the sides of a triangle are 3 : 7 : 8 then R : r =
If the sides of a triangle are 3 : 7 : 8 then R : r =
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In a triangle ABC,
is equal to -
In a triangle ABC, is equal to -
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In a ABC, 2R2 sinA sinB sinC =
In a ABC, 2R2 sinA sinB sinC =
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If 8R2 = a2 + b2 + c2, then the is -
If 8R2 = a2 + b2 + c2, then the is -
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In an equilateral triangle of side 
cms. The circum radius is -
In an equilateral triangle of side cms. The circum radius is -
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If the lengths of the sides of a triangle are 3, 4 and 5 units then R the circum radius is -
If the lengths of the sides of a triangle are 3, 4 and 5 units then R the circum radius is -
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The sides of a triangle are 22 cm, 28 cm and 36 cm. So the area of the circumscrisbed circle is-
The sides of a triangle are 22 cm, 28 cm and 36 cm. So the area of the circumscrisbed circle is-
Maths-General
Maths-
Statement-1 (A) : If 
,
,
are unit coplanar vectors then [2– 2– –] = 0
Statement-2 (R) : [,, ] = 0
Statement-1 (A) : If ,,are unit coplanar vectors then [2– 2– –] = 0
Statement-2 (R) : [,, ] = 0
Maths-General
Maths-
Statement-1 (A) : If ,, are non coplanar vectors then vectors 2–+3,+–2, +– 3 are also non coplanar.
Statement-2 (R) : Three vector 
, 
, 
are non coplanar then [, , ] 0
Statement-1 (A) : If ,, are non coplanar vectors then vectors 2–+3,+–2, +– 3 are also non coplanar.
Statement-2 (R) : Three vector , , are non coplanar then [, , ] 0
Maths-General
Maths-
Statement-1 (A) : Three vector, , are non coplanar then +, +, + are also non coplanar.
Statement-2 (R) :[+,+,+]=[,, ]
Statement-1 (A) : Three vector, , are non coplanar then +, +, + are also non coplanar.
Statement-2 (R) :[+,+,+]=[,, ]
Maths-General
Maths-
Statement-1 (A) :Vectors –2
+
+
, –2+ &+–2 are coplanar for only two values of .
Statement-2 (R) : Three vector ,, are coplanar if . (×) = 0.
Statement-1 (A) :Vectors –2++, –2+ &+–2 are coplanar for only two values of .
Statement-2 (R) : Three vector ,, are coplanar if . (×) = 0.
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A vector has components P and 1 with respect to a rectangular Cartesian system. If the axes are rotated through an angle about the origin in the anticlockwise sense.
Statement-1 : If the vector has component P + 2 and 1 with respect to the new system then P = –1
Statement-2 : Magnitude of vector original and new system remains same.
A vector has components P and 1 with respect to a rectangular Cartesian system. If the axes are rotated through an angle about the origin in the anticlockwise sense.
Statement-1 : If the vector has component P + 2 and 1 with respect to the new system then P = –1
Statement-2 : Magnitude of vector original and new system remains same.
Maths-General
