Remember SOHCAHTOA which means, the Sin of an angle is equal to the Opposite side divided by the Hypotenuse, the Cos of an angle is equal to the Adjacent side divided by the hypotenuse, and the Tangent of an angle is equal to the Opposite side divided by the Adjacent side. So as long as you have two sides of a right triangle, then you can find the angles and the length of the third side.
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hypotenuse.
The answer should be 67. 5 degrees. The adjacent angle equals the hypotenuse divided by two. After calculation the answer should be approximately 68 degrees.
Sine= Opposite/ Hypotenuse Cosine= Adjacent/ Hypotenuse
Cos(angle) = adjacent / hypotenuse. Cos(a) = a/h Substitute Cos(X) = 5/13 = 0.384615... A = Cos^*-1( 0.384615 .... A = 67.38013505... degrees.
False because sine ratio = opposite/hypotenuse