WILL MEDAL AND FAN
The point P, (−3,4), on the circle x^2+y^2=r^2 that is also on the terminal side of an angle θ in standard position is given. Find the indicated trigonometric function. Find sinθ.

Question

WILL MEDAL AND FAN
The point​ P, (−3,4)​, on the circle x^2+y^2=r^2 that is also on the terminal side of an angle θ in standard position is given. Find the indicated trigonometric function. Find sinθ.

anonymous · Answer

@LegendarySadist @Brill Think you guys can help me?

anonymous · Answer

you got the radius of the circle?   you need that first

anonymous · Answer

I didn't, actually.  How would I go around getting that?

anonymous · Answer

the worlds most famous and mother of all right triangles is 3 - 4 - 5 and that is what you have here
if for some reason you don't remember or know that one, you can use $$\sqrt{3^2+4^2}$$

anonymous · Answer

then the sine is the second coordinate over 5

anonymous · Answer

The radius is 5, right?

anonymous · Answer

And the sine is 4/5?

anonymous · Answer

yes and yes