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anonymous
 5 years ago
Simplify the expression
cos^2 x

1 + sin x
A) 1  sin x B) tan^2 x C) sec^2 x D) 1 E) 1 + cos x
anonymous
 5 years ago
Simplify the expression cos^2 x  1 + sin x A) 1  sin x B) tan^2 x C) sec^2 x D) 1 E) 1 + cos x

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watchmath
 5 years ago
Best ResponseYou've already chosen the best response.1hint: \(\cos^2 x+\sin^2x =1\)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Which gives me 1  sin^2x  1 + sinx but i'm not sure where to go from there

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.1good! notice that the top is a difference of two squares.

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.1so we can factor the top :D.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0which gives me (1sinx)(1+sinx)  1+ sinx which = 1 sinx

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So is the answer just A?
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