cos(30) / sin(45) = [sqrt(3)/2] / [sqrt(2)/2] =
[sqrt(3)/2] x [2/sqrt(2)] = sqrt(3)/sqrt(2) =
sqrt(1.5) = about 1.2247 (rounded)
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The sine of 52.5 degrees equals 0.79335334029124. Hope I helped!
You are referring to a special case of shape its called a line
If sine theta is 0.28, then theta is 16.26 degrees. Cosine 2 theta, then, is 0.8432
3060 degrees is eight and a half revolutions. So the sine of 3060 degrees is the same as the sine of 180 degrees (half a revolution) sin 180 = 0
sine(15 degrees) = 0.25882 (rounded)