1.

In Δ ABC, ∠B = 90º, AC = 29 cm and BC = 20 cm. Then \(\frac{{1 - \sin A + \cos A}}{{1 + \sin A + \cos A}}\) is equal to:

A. 3/8
B. 3/7
C. 1/2
D. 1/4
Answer» C. 1/2


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