arccosine

we need to calculate the arccosine of this angle to find its complementary angle.

the arccosine function returns an angle in radians.

using a calculator, i found the arccosine of 0.5 to be approximately π/3.

the range of the arccosine function is [0, π].

the arccosine of -1 is π.

i'm using the arccosine to determine the angle of incidence.

the arccosine is the inverse function of the cosine function.

we can use the arccosine to solve for unknown angles in a right triangle.

the arccosine of 1 is 0.

the domain of the arccosine function is [-1, 1].

i'm plotting the graph of the arccosine function to visualize its behavior.