Trigonometry - Compound and Double-Angle Identities

Trigonometry - Compound and Double-Angle Identities

4 marks

Prove that \(\sin 2x-\cos 2x\tan x=\tan x\).[4]

Solution:

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Answer:\(\sin2x-\cos2x\tan x=\tan x\), for \(\cos x\ne0\) (shown).

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