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Question 5 If cos(α+β)=0, then sin(α−β) can be reduced to (A) cosβ (B) cos2β (C) sinα (D) sin2α

Answer» Question 5
If cos(α+β)=0, then sin(αβ) can be reduced to

(A) cosβ
(B) cos2β
(C) sinα
(D) sin2α


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