Question

True or False:

Answer 1

\[\sec ^2x-1=\tan^2\] is an identity.

Answer 2

\[cosx = \frac{ \sqrt{3} }{ 2 }\] is an identity

Answer 3

What does it mean for something to be an identity?

Answer 4

relationship between sine and cosine?

Answer 5

no, not exactly. If you have your book, why don't you look up the definition or google the math definition?