perplexus.info :: Just Math : Trig trick

Trig trick (Posted on 2002-11-07)

Prove that

sin² x + cos² x = 1

See The Solution Submitted by Dulanjana

Rating: 2.4545 (11 votes)

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what is.....

| Comment 10 of 13 |

what is sin and cos

Posted by Billy Bob on 2004-03-28 10:53:05

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