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What is exact value of sin75?

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โˆ™ 2012-05-22 13:14:23

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sin(75) = sin(45 + 30) = sin(45)*cos(30) + cos(45)*sin(30)

= [1/sqrt(2)]*[sqrt(3)/2] + [1/sqrt(2)]*[1/2]

= 1/[2*sqrt(2)]*[sqrt(3) + 1]

that is [sqrt(3) + 1] / [2*sqrt(2)]

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โˆ™ 2012-05-22 13:14:23
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