SOLUTION: Explain the following as an algebraic expression of a single trigonometric function: ((tan^2(a)-1)/(1+tan(a)) A)1+sec(a) B)tan(a)-1 C)1-sec(a) D)tan(a)+1

Question 888595: Explain the following as an algebraic expression of a single trigonometric function:
((tan^2(a)-1)/(1+tan(a))
A)1+sec(a)
B)tan(a)-1
C)1-sec(a)
D)tan(a)+1
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!

*

, you can see difference of squares in the numerator, and factorability of the denominator.

Note the understood use of commutative property of addition...

Tangent minus One.
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