Trig
posted by Don .
Prove that the equation is an identity:
cot4theta  csc4theta = cot sq theta  csc sq theta
How ??

cot^4  csc^4
= (cot^2  csc^2)(cot^2 + csc^2)
= (1)(cot^2 + csc^2)
= cot^2  csc^2
remember csc^2 = 1 + cot^2 ??