3 is :

1. π/3

2. 2π/3

3. π

4. 2π

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Correct Answer :

π/3

Explanation :
No Explanation available for this question

If a sin2 θ + b cos2 θ = c, then tan2 θ is equal to :

1. b - c a - c

2. c - b a - c

3. a - c b - c

4. a - c c - b

View Answer

Correct Answer :

c - b  a - c

Explanation :
No Explanation available for this question

If cos(x - y), cos x, cos(x + y) are three distinct numbers which are in harmonic progression and cos x ≠ cos y, then 1 + cos y =

1. cos2 x

2. - cos2 x

3. cos2 x - 1

4. cos2 x - 2

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Correct Answer :

cos2 x

Explanation :
No Explanation available for this question

The set of solutions of the equation (√3 - l) sin θ + (√3 + l) cos θ = 2 is :

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

If tan-1x + tan-1y + tan-1z = π/2, then 1 - xy - yz - zx =

1. 1

2. 0

3. -1

4. 2

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

1. 1

2. 2

3. 1 / 2

4. 1 / 4

View Answer

Correct Answer :

1 / 2

Explanation :
No Explanation available for this question

If ∆ = a2 - (b - c)2, is the area of the triangle ABC, then tan A =

1. 1 / 16

2. 8 / 15

3. 3 / 4

4. 4 / 3

View Answer

Correct Answer :

8 / 15

Explanation :
No Explanation available for this question

In ∆ ABC, C = 90o . Then (a2 - b2) / (a2 + b2) is equal to :

1. sin (A + B)

2. sin (A - B)

3. cos (A + B)

4. cos (A - B)

View Answer

Correct Answer :

sin (A - B)

Explanation :
No Explanation available for this question

The sum of angles of elevation of the top of a tower from two points distant a and b from the base and in the same straight line with it is 90°. Then the height of the tower is :

1. a2b

2. ab2

3. √ab

4. ab

View Answer

Correct Answer :

√ab

Explanation :
No Explanation available for this question

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

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