Mathematics · Trigonometry

If cos(2A) = 1 - 2sin2A, then which of the following is equal to cos(2A) when cos(A) = 1 - 2sin2A is given as a local equation?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1cos(A)✓
2sec(A)
31 - 2sin2A
4sin(A)

Correct answer

cos(A)

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If cos(2A) = 1 - 2sin2A, then which of the following is equal to cos(2A) when cos(A) = 1 - 2sin2A is given as a local equation?

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If cos(2A) = 1 - 2sin2A, then which of the following is equal to cos(2A) when cos(A) = 1 - 2sin2A is given as a local equation?

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