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OpenStudy (anonymous):
Determine the sign of cos pi divided by three without using a calculator.
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OpenStudy (astrophysics):
What do you mean?
OpenStudy (astrophysics):
pi/3 is in the first quadrant so it's all positive
OpenStudy (anonymous):
thank you!
OpenStudy (anonymous):
Evaluate sin 60° without using a calculator by using ratios in a reference triangle. My answer so far: The sine is the ratio of the opposite leg to the hypotenuse sin a=opp leg/hypotenuse sin 60 deg=opposite/hypotenuse=square root 3/2 how can i fix/make my answer better
OpenStudy (welshfella):
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