Question

Find the point on the terminal side of θ = negative three pi divided by four that has an x coordinate of -1.

Answer 1

So, an angle of -3pi/4 has a reference angle of 45 degrees. And since we know the x-coordinate is -1, we can set up a triangle with the angle of the triangle being 45 degrees in quadrant 3 with an adjacent side marked as -1 (although keep in mind we cant technically have a negative side length).



We already have the x-coordinate of the point, so all we need is the y-coordinate. Would you know how to get the y-coordinate with that information?

Answer 2

yes. Thank you very much :)

Answer 3

No problem ^_^