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Question Video: Finding the Cosine of Angles in Right-Angled Triangles given the Opposite Side and the Hypotenuse | Nagwa
A leg of a right triangle is 4 units and the hypotenuse is 9 units. How do I find the length of the other leg, in units? - Quora
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trigonometry - How to calculate a point on a hypotenuse given two angles - Mathematics Stack Exchange
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