The point (0.83265, 0.55380) lies on the unit circle. If a terminal arm is drawn through this point, what is the sine ratio of the angle?

Question

The point (0.83265, 0.55380) lies on the unit circle.  If a terminal arm is drawn through this point, what is the sine ratio of the angle?

barrycarter · Answer

@satellite73 Actually, that's the tangent.

The sin is opposite over hypotenuse. Since it's on the unit circle, the hypotenuse is 1, so the sin is the y coordinate or 0.55380

anonymous · Answer

since it is a unit circle the y component of the point will be its sine ratio, .55380

anonymous · Answer

ho ho ho so it is!

anonymous · Answer

second coordinate is sine, first is  cosine, tangent is second over first.  my apologies

anonymous · Answer

ahaha okay, thanks you guys