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Trigonometry
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OpenStudy (anonymous):
is sine of a funtion an odd number?
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OpenStudy (astrophysics):
sin is an odd function and cos a even function \[\sin(-x) = -sinx~~~~\text{and}~~~\cos(-x) = cosx\]
OpenStudy (anonymous):
ok thx ur a big help man!!!
OpenStudy (astrophysics):
Np :)
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