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OpenStudy (zned6559):
simplify sin^2(-x)+cos(-x)
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OpenStudy (john_es):
Are you sure this is the correct problem?
OpenStudy (zned6559):
simplify sin^2(-x)+cos^2(-x)
OpenStudy (solomonzelman):
Sin^2x+Cos^2x+1 so what is the answer?
OpenStudy (solomonzelman):
this is true for sin^2(-x)+cos^2(-x) as well. it is just a trigonometric identity.
OpenStudy (solomonzelman):
I meant Sin^2x+Cos^2x=1
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OpenStudy (zned6559):
huh?
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