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Question

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





(b)
sin(−17ð/4)





(c)
cos(17ð)





(d)
cos(45ð/4)





(e)
tan(−3ð/4)





(f)
cos(7ð/4)





(g)
sec(ð/6+2ð)









(h)
csc(2ð −ð/3)









13 years ago

Answers

Reiny
look how I answered Kaleen's similar question

http://www.jiskha.com/display.cgi?id=1331432278
13 years ago

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