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To find side lengths on a triangle, you need to know at least one of the sides. The possible combinations for solving* a triangle are:

side, side, side;

side, angle, side;

angle, side, angle;

angle, side, longer side.

*To solve a triangle is to find the lengths of all the sides and the measures of all the angles.

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Q: How do you find the side length on a triangle with one angle given?
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