The value of `cos(2A)+cos(4A)` such that `cos A=-(1)/(4),` will be

Find the value of : cos^(-1)(cos 4)

Find the value of : cos^(-1)(cos 4)

Find the value of cos^-1(cos(-pi/4))

The value of 4(cos^(2)73+cos^(2)47+cos73*cos47)

If sinA+sin^2A=1, then the value of cos^2A+cos^4A is (a)2 (b) 1 (c) -2 (d) 0

The value of int(cos 5x+cos 4x)/(1-2 cos 3 x)dx , is

If sin A + sin^2 A = 1 , then the value of cos^2A + cos^4 A is यदि sin A + sin^2 A = 1 , तो cos^2A + cos^4 A का मान है-

Find the value of cos^(-1)(cos((4pi)/(3)))+cos^(-1)(cos((5pi)/(4)))