Question

Enter the expression asin(x)+15, where asin(x) is the inverse sine function.

Answer 1

Press the "2nd" button then the "SIN" button,

then press the number you want to know the asin, let's say the x,

then, press the "+" button,

then, press 15

and that's it.

Explanation:

In a normal scientific calculator it should be easy to find these buttons.

Answer 2

Specifically, they are the inverses of the sine, cosine, tangent, cotangent, secant, and cosecant functions, and are used to obtain an angle from any of the angle's trigonometric ratios. Inverse trigonometric functions are widely used in engineering, navigation, physics, and geometry. I'm not sure what your entering the expression into, but if it's a graphing calculator, the arcsine function is listed as sin⁻¹ and should be the same button as sin. Press 2nd, then sin.