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OpenStudy (anonymous):
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OpenStudy (mertsj):
Look at your identity table. You have one that says sin(-x)=
OpenStudy (mertsj):
OpenStudy (mertsj):
Don't you have a list of identities in the back of your book or somewhere?
OpenStudy (anonymous):
does it help to know that sine is odd?
OpenStudy (mertsj):
sin(-x)=-sin(x) which says the sin of the opposite of an angle is the opposite of the sin of the angle.
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OpenStudy (mertsj):
So just substitute: |dw:1363917961039:dw|
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