03/20/13

(Cos^2x-sin^2x)/ (sin x cos x)
Terms of sin an cos simplify   
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03/20/13

Cos (7 pi/ 12)
Find the exact value of each expression
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03/20/13

(Sec theata+ Csc theata)(cos theata+ sin theata)
you have to use the identities an. It's trig 
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03/14/13

sin^2x(1+cot^2x)-1=0
verify the following identies  
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Expert Answers •1

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