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Given sin α = 1/2 and cos β = 1/2, then value of (α + β) is :(A) 0°(B) 30°(C) 60°(D) 90° |
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Answer» Answer is (D) 90° Given, ⇒ sin α = sin 30° α =30° and cos β = 1/2 ⇒ cos β = cos 60° β = 60° Now, α + β = 30° + 60° = 90° |
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