Mathematics
Prove the following identities, where the angles involved are acute angles for which the trigonometric ratios are defined:
(sec A - tan A)2(1 + sin A) = 1 - sin A.
Prove the following identities, where the angles involved are acute angles for which the trigonometric ratios are defined:
(sec A - tan A)2(1 + sin A) = 1 - sin A.