Mathematics, 23.12.2020 04:20 sylaspotter707

Prove that (3-4 sin^2a). (1-tan^2a)=(3-tan^2a) (4 cos^2a-3)

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Prove that (3-4 sin^2a). (1-tan^2a)=(3-tan^2a) (4 cos^2a-3)...