Hi there!
To find the hypotenuse of a triangle when all you know is a leg and an angle, you can use trigonometry. There are three different functions of trig. There is Sine, Cosine, and Tangent. Sine is opposite/hypotenuse, Cosine is adjacent/hypotenuse, and Tangent is opposite/adjacent. Depending on where the angle is located and what you need to find, determines what function you need to use. I've attached an image below to help you.
Hope this helps!! :)
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