Question

help me ....................​

Answer 1

Answer:

cos3x/(2cos2x- 1) = 1/2

Step-by-step explanation:

2cos3x = 2cos2x -1

2(4cos^3x - 3cosx) = 2(2cos^2x - 1) - 1

2cosx(4cos^2x - 3) = 4cos^2x - 3

2cosx = 1 => cosx = 1/2

cosx = cos60°

x = 60° Answer

#MukeshBhardwaj

Answer 2

Answer:

Refer the attached picture.