Trigonometry Ex - 15 A Q. 2. If sinθ = -1/2 and θ lies in Quadrant IV, find the values of all other five trigonometric functions. Ans. Q.3. If Cosecθ = 5/3 and θ lies in Quadrant IV, find the values of all other five trigonometric functions. Ans. Thanks for coming ... I hope you all. understand.