Very basic question, but I'm having difficulty finding an answer. It wasn't listed here, or on $\approx 20$ other sites I looked at. I don't know how to solve a right triangle if I'm only given a point and angle, like so:
Here, the bottom of the triangle is on the x-axis.
Are you to assume that the right angle is at $(-1,0)$?
If so, then $\tan 13^\circ = {2\over {\rm horizontal\ leg}}$, so this can be solved for the horizontal leg, about 8.66. That gives the coordinates of the third point as $(7.66, 0)$.
Is that what it means to solve this problems?