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Tianna Adams
19 March, 04:22
Explain why sin (90) = 1
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Antonio Chavez
19 March, 07:20
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When talking about the unit circle, it's important to remember that sin = y-value, and cos = x-value. When you move 90 degrees in quadrant order (counterclockwise), you end up with a y-value of 1. Therefore, sin (90) would equal 1 (and cos (90) would be 0).
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