Question

The point p(x, y) on the unit circle that corresponds to a real number t is given. find the values of the indicated trigonometric function at t.

Answer 1

Unit circle : a circle with radius of one. Unit circle is centered at the origin.

Use the formula cot x = base / perpendicular, where x is the angle. Substituting x,y and t to the formula, we get cot (t) = x / y.