Thursday
March 23, 2017

Post a New Question

Posted by on Thursday, March 29, 2012 at 5:23pm.

The point (3,-8) is on the terminal arm of the angle x. Find sinx exactly and find x, in radians, to two decimal places.

I don't how I should start this question.

please help and thank you

  • Math Help Plz - , Friday, March 30, 2012 at 10:23am

    you know that tanθ = y/x = -8/3

    Arctan(8/3) = 1.21
    so, since we are in the 4th quadrant,

    θ = -1.21

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question