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posted by  Droski on 7/1/2008 9:57:33 AM  |  status: Live  

Precal II help

Course Textbook Chapter Problem
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60.) (secθ + cscθ) (cosθ - sinθ)  
 
write each expression in terms of sine of cosine, and simplify it.

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posted by Anonymous on 8/17/2008 2:52:40 AM  |  status: Live
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Response Details:
sec = 1/cos
csc = 1/sin
just FOIL it
so...
sec X cos = cos/cos = 1
sec X -sin = -sin/cos = -tan
etc. 
Tags: Math, Calculus
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