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Evaluate sin 105° + sin 15° using the sum-to-product rule.
A1/2
B√3/2
C√6/2
D√2/2
Answer & Solution
Correct answer: C. √6/2
sin105 + sin15 = 2 sin60 cos45 = 2 × (√3/2) × (1/√2) = √6/2.
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