Answer:
Explanation:
The right angle means that you are working with a right angle triangle. Therefore one of the 3 basic trig functions must be used to define x.
Sin(x) = opposite / hypotenuse.
opposite = 15
hypotenuse = 17
Sin(x) = 15/17
Sin(x) = 0.8824
But that's not what you are asked for. You are asked for an angle. That means you must use the inverse of the sine function.
x = sin-1(0.8824)
x = 61.93
That's about as brief as I can make it.