Question

Sin^2-1; sin^f+cos^f+1​

Answer 1

$2)\; \; sin^2\beta +cos^2\beta =1\\\\sin^2\beta -1=cos^2\beta \\\\3)\; \; \underbrace{sin^2\varphi +cos^2\varphi }_{1}+1=1=1=2$

Answer 2

It looks like you're trying to write a mathematical expression involving trigonometric functions. However, the expression you provided is not clear. It seems like there might be a typo or formatting issue.

If you could clarify the expression you want to evaluate or simplify, I'd be happy to help you further.