Find sin(15°):
A1/√2
B(√3 + 1)/(2√2)
C1/4
D(√3 - 1)/(2√2)
Answer & Solution
Correct answer: D. (√3 - 1)/(2√2)
sin(15°) = sin(45° - 30°) = sin45 cos30 - cos45 sin30 = (1/√2)(√3/2) - (1/√2)(1/2) = (√3 - 1)/(2√2).
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