Question

True or false?
(1-sin^2 x)(1-cos^2 x) = cos^2 x(sin^2 x -1)

Answer 1

Well, we know that 1-sin^2x=cos^2x so I guess it comes down to does 1-cos^2x=sin^2x-1

Answer 2

they arent equal right. because 1-cos^2x is equal to sin^2 @Mertsj

Answer 3

I agree.

Answer 4

ok thanks! :)

Answer 5

yw