180
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sin(angle) = opposite/hypotenuse → hypotenuse = opposite/sin(angle) opposite = rise → hypotenuse = 40ft / sin 16.5° ≈ 140.84 ft
A right angle is 90 degrees
There are 90 degrees in a right angle.
A right angle is exactly 90 degrees.
A supplementary angle is a 180-degree angle minus the number of degrees in the given angle.