Question

If cot theta = -9/2 with theta in quadrant 2, find sin theta. Please show work if possible.,... Having a hard time understanding this.

Answer 1

http://gyazo.com/5b606dedc418033ff386920fb4f9c9f2

Answer 2

forget about the minus sign for a moment, draw a right triangle

Answer 3

there is a picture of an angle whose cotanent is \(\frac{9}{2}\) using
"adjacent over opposite"
all that is missing is the hypotenuse of the triangle,
find if by pythagoras