Thursday
September 18, 2014

Homework Help: Trig

Posted by Sierra on Wednesday, November 7, 2012 at 11:27am.

Give: a=alpha B=beta
csc a= 2
pi/2<a<pi
secB=-3
pi/2<B<pi

1)find sin(a+B)
2)find tan(a-B)
3)cos B/2
4)sin a/2

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