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Mathematics 10 Online
OpenStudy (anonymous):

Evaluate sin 60° without using a calculator by using ratios in a reference triangle.

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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