A few trig problems- help please (double angle and simplifying trig expressions)
Hey, I have been trying to figure out how to do these problems for quite some time, but I'm stuck. Help is very much appreciated.
2- ((sin^2(x)/tan^2(x))= sin^2x-1
I really cannot figure this out.
Also, how do you solve this problem for theta? (this is one where I'm supposed to find the reference angle):
and last thing, how do you find the cot(M+N)? Is it the same as the sum formula for cos but under 1?
Thank you so much!