# Math Help - circular functions

1. ## circular functions

Let P (x,y) denote the point where the terminal side of angle (in standard position) meets the unit circle. Evaluate the six trigonometric functions of .

P is in quadrant III and y=-3/4.

Is sine -3/4??? If not, how do I find sine? I am very confused. Thanks so much.

2. Originally Posted by daydreembelievr
Let P (x,y) denote the point where the terminal side of angle (in standard position) meets the unit circle. Evaluate the six trigonometric functions of .

P is in quadrant III and y=-3/4.

Is sine -3/4??? If not, how do I find sine? I am very confused. Thanks so much.
yes ... $\sin{\theta} = -\frac{3}{4}$

draw a reference triangle in quad III and determine the other trig ratios.