Q2 Prove (cos x - sin x)^2 = 1 - sin 2x

Proving Trigonometric Identities
Q2 Prove (cos x - sin x)^2 ≡ 1 - sin 2x

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Playlist for Proving Trigonometric Identities

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Strategy for Proving Trigonometric Identities

Q1 Prove cot x sin x ≡ cos x

Q3 Prove csc x sec x ≡ tan x + cot x
Q3 Prove cosec x sec x ≡ tan x + cot x

Q4 Prove tan 2x - 2tan 2x sin^2 x ≡ sin 2x

Q5 Prove tan^2 x – sin^2 x ≡ tan^2 x sin^2 x

Q6 Prove sin 2x /(1 - cos 2x) ≡ cot x

Q7 Prove cot x + sin x /(1+cos x) ≡ csc x
Q7 Prove cot x + sin x /(1+cos x) ≡ cosec x