mcfate
mcfate
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pi/4 = 45 degrees. That defines an isoceles right triangle (45-45-90), where the opposite and adjacent sides are the same, and the hypotenuse is square root of 2 times as long. Cosine is adjacent/hypotenuse = 1/sqrt(2), or sqrt(2)/2 expressed wi…
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pi/4 = 45 degrees. That defines an isoceles right triangle (45-45-90), where the opposite and adjacent sides are the same, and the hypotenuse is square root of 2 times as long. Cosine is adjacent/hypotenuse = 1/sqrt(2), or sqrt(2)/2 expressed wi…