Question

could someone please refresh my memory of the basic trig functions?

ex) cos^2 + sin^2 = 1?

That is a trig identity.

http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Related Questions

I need help refreshing my memory. How can you tell if a problem like this has a solution or not?... Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90-x)=-3/8 8.)Csc x=-1... for graphing basic trig functions such as y=2sinx or y=1/3cosx, how do you know what the points are... Please refresh my memory! How do you solve 5x - 3/2x? Thank you!