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OpenStudy (anonymous):
Evaluate sin 60° without using a calculator by using ratios in a reference triangle.
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OpenStudy (jdoe0001):
well, use the 30-60-90 rule to get your ratios :)
OpenStudy (jdoe0001):
the 30-60-90 rule => http://upload.wikimedia.org/wikipedia/commons/4/45/30-60-90_triangle.jpg keep in mind that in an Unit Circle, the radius, or hypotenuse, is 1
OpenStudy (anonymous):
Thank you :)
OpenStudy (jdoe0001):
yw
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