`2cos^(10)((x+x^2)/3)=4^x+4^-x`

If cos^(-1)(cos 4)gt3x^(2)-4x then

If cos^(-1)(cos 4)gt3x^(2)-4x then

cos^3(x-((2pi)/3))+cos^3x+cos^3(x+((2pi)/3)))=3/4 cos3x

The domain of Cos^(-1).(x-3)/(2)-log_(10(4-x) is

The domain of cos^-1 ((x-3)/2)-log_10(4-x) is

2cosx-cos3x-cos5x= ............... A) 16 cos ^(3) x sin ^(2) x B) 16 sin^(2) x cos ^(2) x C) 4 cos ^(2) x sin ^(2) x D) 4 sin ^(2) x cos ^(2)x

prove that cos^(3)(2x)+3cos2x=4(cos^(6)x-sin^(6)x)

Let Delta(x)=|(3+2sin^(4)x,2cos^(4)x,sin^(2)2x),(2sin^(4)x,3+2cos^(4)x,sin^(2)2x),(2sin^(4)x,2cos^(4)x,3+sin^(2)2x)| then int_(-pi//2)^(pi//2)x Delta(x)dx equals

The extreme values of 4cos(x^(2)).cos((pi)/(3)+x^(2)).cos((pi)/(3)-x^(2)) are