# Thread: Points on a triangle

1. ## Points on a triangle

Sorry, I think I posted this in the wrong section. Anyway... I have a problem and I can't figure it out. I have to points on a plane. One point is (0,0), the other point is (x,y). When I join these points the length of the line is 90. This line is used to make a right angle triangle with both angles (non right angles) pi/4. How do I figure out the points (x,y) using SIMPLE trig? Any help is greatly appreciated. Cheers.

2. Note that the triangle is isosceles so $\displaystyle x=y$.
$\displaystyle y = \left( {90} \right)\sin \left( {\frac{\pi }{4}} \right)$

3. Originally Posted by trigprob
Sorry, I think I posted this in the wrong section. Anyway... I have a problem and I can't figure it out. I have to points on a plane. One point is (0,0), the other point is (x,y). When I join these points the length of the line is 90. This line is used to make a right angle triangle with both angles (non right angles) pi/4. How do I figure out the points (x,y) using SIMPLE trig? Any help is greatly appreciated. Cheers.