Question

What's an easy way to remember all the trigonometric identities, like sin^2x+cos^2x=1?

Answer 1

practice and study lol

Answer 2

yeah hhh Study and they will be saved in ur brain =D !

Answer 3

sin and cos are two of the most basic trig functions, and this is one of the most basic identity. If you can remember anything, you can remember this one. For what its worth, it is closely related to x^2+y^2=1, that's a way to remember it.