Mathematics · Trigonometry
If cos(A - α) = p and sin(A - β) = q, then the value of cos2(α - β) + 2pq sin(α - β) is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1p2 q2
- 2p2 + q2✓
- 34 p2 q2
- 4p2 - q2
Correct answer
p2 + q2
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