Mathematics · Trigonometry
If tan2 θ = cos2 φ - sin2 φ, then which of the following equations is true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos2 φ × cos2 θ = 2
- 2cos2 θ × cos2 φ = 1
- 3cos2 θ × cos2 φ = 2
- 4cos2 φ × cos2 θ = 1/2✓
Correct answer
cos2 φ × cos2 θ = 1/2
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