Mathematics · Trigonometry
Which of the following options is NOT a correct trigonometric identity?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos 2 θ - sin 2 θ ≡ 1✓
- 21 - sin 2 θ ≡ cos 2 θ
- 31 + tan 2 θ ≡ sec 2 θ
- 41 + cot 2 θ ≡ cosec 2 θ
Correct answer
cos 2 θ - sin 2 θ ≡ 1
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