October 2019 2 30 Report
 \frac{ { \cos }^{2} \alpha }{1 - \sin \alpha } - \frac{ { \cos}^{2} \alpha }{1 + \sin \alpha } =

a. 2 sin a
b. 2 cos a
c. 2 tan a
d. 2 sec a
e. 2 cosec a​
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