Simplify The Product Cos A Cos 2A. Cos22A…..cos2n-1A.

 then the value of tan α tan 2α tan 3α….tan(2n-1)α is equal to

The number of solution of the equation

  is/are

If tan x = 2b/(a – c) (a ≠ c), y = a cos² x + 2b sin x cos x + c sin² c and z = a sin² x – 2b sin x cos x + c cos² x, then

If A and B are acute angles such that sin A = sin² B, 2cos² A = 3 cos² B; then

If cos (θ – α), cos θ and cos (θ + α) are in harmonic progression, then cosθ sec (α/2) is equal to

If A and B are acute angles such that A + B and A – B satisfy the equation tan² θ – 4 tan θ + 1 = 0, then find the value of A and B.

Find the possible integral values of a for which cos 2x + a sin x = 2a – 7 has solutions.

Find the maximum and minimum values of