An equation of the terminal side of an angle θ in standard position is given with a restriction on x. Sketch the least positive such angle θ , and find the values of the six trigonometric functions of θ . See Example 3. ―5x ― 3y = 0 , x ≤ 0

An equation of the terminal side of an angle θ in standard position is given with a restriction on x. Sketch the least positive such angle θ , and find the values of the six trigonometric functions of θ . See Example 3. x = 0 , y ≥ 0

Find the indicated function value. If it is undefined, say so. See Example 4. sec 180°

Find the indicated function value. If it is undefined, say so. See Example 4. sin(―270°)

Find the indicated function value. If it is undefined, say so. See Example 4. tan 450°

Find the indicated function value. If it is undefined, say so. See Example 4. cos 1800°