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Mathematics 16 Online
OpenStudy (anonymous):

.

OpenStudy (mertsj):

Look at your identity table. You have one that says sin(-x)=

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.

OpenStudy (mertsj):

So just substitute: |dw:1363917961039:dw|

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