what is a good site that actually explains and has examples for different trig identities?

Question

mathteacher1729 · Answer

http://tutorial.math.lamar.edu/cheat_table.aspx

anonymous · Answer

thanks but how do u know when to use what?

anonymous · Answer

The short answer is practice.

The main ones (apart from the usual triangle type) are the Pythagorean identities, the sum and difference formulas and the double/half angle formulas.

Most problems involve some combination of those.

Reducing everything to sin and cos is a reasonable strategy starting out....

anonymous · Answer

wow so many trig question are being posted