π cos(0) 13) Calculate: 3√1-sin 0 π 3 de

Q: Simplify 2sin(4x) cos(4x)

A:

Q: 2 Simplify completely: sec x (1 – sin² x). sec x CO X O None of these. O 1 sin x

A: we use Trigonometry identities

Q: Find x if cos 53°= sin x. %3D (1) 90° (2) 127° (3) 53° (4) 370

A: To find x, if cos53°=sin x

Q: Simplify  1/cos a 1/sin b

A: we know that  1cosθ=secθ1sinθ=cosecθ

Q: 1+sin x 4 15. Evaluate o cos2 x

A: Integral of sec^2x is tanx and secxtanx is secx

Q: Let sinA=-4/5 with A in QIII and cosB=-3/5 with B in QII. Anwer Exactly. Find sin(A-B), cos(A-B),…

A: Given,

Q: prove that sin(45° + A) sin(45° - A) = 1/2cos2A

A:

Q: What is the value of x? √2 cosx-1=0 2sin3x+1=0

A:

Q: Find the angle between 0 and 2π equivalent to 13π /4.

A: The given angles are, 0,2π and 13π4.

Q: Derive the following formulas: cos 2x =1-2 sin² x

A:

Q: Let z=x+iy be a complex number such that coshz =0. Then Im(tanhz) is equal to * sinycosy…

A: first option is correct answer. Thankyou

Q: 2370  +  Sin 253 0=

A: Sin253° = -0.9563