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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 (anonymous):
@hartnn
hartnn (hartnn):
can you draw a reference triangle for me ?
OpenStudy (anonymous):
i don't know what a reference triangle is . hold on and i will look it up (:
hartnn (hartnn):
something like this, |dw:1382464838276:dw|
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