Chapter 3
cos x = - 2 , x lies in third quadrant.
sin x = 5 , x lies in second quadrant.
cot x = 4 3 , x lies in third quadrant.
sec x = 5 , x lies in fourth quadrant.
tan x = - 12 , x lies in second quadrant. Find the values of the trigonometric functions in Exercises 6 to 10.
sin 765° 7. cosec (- 1410°)
tan 19π / 3 9. sin (- 11π 3 )
cot (- 15π / 4 )