Question

Use the Pythagorean theorem to prove the Pythagorean identity: (given: a squared + b squared = c squared, sin of data = a/c, cos of data = b/c

Answer 1

u want prof of pythagorean thrm or sin theta = a/c and cos theta = b/c

Answer 2

Both

Answer 3

start with this

Answer 4

Ok

Answer 5

http://en.wikipedia.org/wiki/Pythagorean_theorem

Answer 6

lots of nice proofs there