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## anonymous one year ago The point (8, –15) is on the terminal side of an angle θ. What is sin θ ?

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1. anonymous

a- -15 b- -15/17 c- 15/17 d- -15/8

2. anonymous

@amistre64

3. anonymous

what grade are you in?

4. anonymous

12

5. anonymous

can't help you, sorry. I am in 7th grade.

6. Nnesha

(x,y) order pair where x-coordinate represent cos and y-coordinate represent sin first look at the sign chart |dw:1443641895432:dw|

7. Nnesha

CAST sign char :/:P lol^^^

8. Nnesha

given = (8 ,-15) x=8 y=-15 cos is positive and sin is negative so we should draw a right triangle in 4th quadrant |dw:1443642240183:dw|$\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }$ now use the Pythagorean theorem to find 3rd side

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