Trigonometric Functions and Angle Measures Quiz

$360°$ = $2\pi$ radians $180°$ = $\pi$ radians $90°$ = $\frac{\pi},{2}$ radians $45°$ = $\frac{\pi},{4}$ radians

$2\pi$ = $360°$ $\pi$ = $180°$ $\frac{\pi},{2}$ = $90°$ $\frac{\pi},{4}$ = $45°$

Radian = A unit of angle, equal to an angle at the center of a circle whose arc is equal in length to the radius. Degree = A unit of angle, equal to $1/360$ of a full circle. Unit Circle = A circle with radius 1. Trigonometric functions = Functions that are related to the angles of a triangle.

<p>Sine = In a right triangle, the ratio of the length of the side opposite the angle to the length of the hypotenuse. Cosine = In a right triangle, the ratio of the length of the adjacent side to the length of the hypotenuse. Tangent = In a right triangle, the ratio of the length of the opposite side to the length of the adjacent side. Cotangent = In a right triangle, the ratio of the length of the adjacent side to the length of the opposite side.</p> Signup and view all the answers

<p>$θ$ = A variable often used to represent an angle in mathematics. $π$ = The ratio of the circumference of any circle to its diameter. $s$ = The length of the corresponding arc on the unit circle. $360°$ = The degree measurement of a full circle.</p> Signup and view all the answers