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Math Help - circular functions

  1. #1
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    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.
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    Quote Originally Posted by daydreembelievr View Post
    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.
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