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Why is sine used?

Updated: 12/16/2022
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12y ago

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when trying to find the angle of a right triangle using only the opposite leg and the hypotenuse, eg. angle =sin opp leg over hyp

* * * * *

Also to find the area of a triangle if two sides and the included angle are known.

Or the area of a sector of a circle.

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12y ago
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Q: Why is sine used?
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