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29 December, 20:55

Sin 3pi divided by 4

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  1. 29 December, 21:44
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    Sin 3pi/4 is angle 135 degrees or 45 degrees below 180 degrees. Hence it's opposite side is 1 and adjacent is 1, implying the hypothenus is sqrt (2). Hence

    Sin 3pi/4 = 1/sqrt (2). Now multiply by sqrt (2) / sqrt (2) to get:

    [1/sqrt (2).] * [sqrt (2) / sqrt (2) ] = sqrt2) / 2
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