Trigonometry PYQ

The value of sin²30° + cos²30° is:

The number of solutions of 2sin²x + sin²2x = 2 in [0, 2π] is:

The value of sin²θ + cos²θ is:

The value of sin(π/18)·sin(5π/18)·sin(7π/18) is:

In triangle ABC if a=5, b=4 and cos(A-B)=31/32 then c is:

The general solution of sin²θ - 2cosθ + 1/4 = 0 is:

If tan θ = 3/4 and θ is in the third quadrant then sin θ is:

The value of sin30° + cos60° is

The value of cos²15° - cos²75° is:

If sin A + sin B = 1 and cos A + cos B = 0 then the value of 12cos2A + 4cos2B is: