Mathematics · Trigonometry
For x ∈ &mathbb;R, which one of the following assertions is false?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1sin(2x) = 2sin(x)cos(x)
- 2cos(2x) = 1 - 2sin2(x)
- 3sin2(x) + cos2(x) = 1
- 4sec2(x) + tan2(x) = 1✓
Correct answer
sec2(x) + tan2(x) = 1
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