Saturday
September 20, 2014

Homework Help: Pre Calculus

Posted by Stephanie823 on Saturday, March 10, 2012 at 9:21pm.

Use one of the identities
cos(t + 2k) = cos t or sin(t + 2k) = sin t to evaluate each expression. (Enter your answers in exact form.)
(a)
sin(17/4)





(b)
sin(−17/4)





(c)
cos(17)





(d)
cos(45/4)





(e)
tan(−3/4)





(f)
cos(7/4)





(g)
sec(/6+2)









(h)
csc(2 −/3)

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