trig
posted by jenna .
find the single term of cos^2 4theta  sin^2 4theta

Cos^2(x)  Sin^2(x) = Cos(2 x)
So, you can write the expression as
cos(8 theta)
posted by jenna .
find the single term of cos^2 4theta  sin^2 4theta
Cos^2(x)  Sin^2(x) = Cos(2 x)
So, you can write the expression as
cos(8 theta)