# Points on a triangle

• Apr 1st 2008, 01:57 AM
trigprob
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.
• Apr 1st 2008, 04:01 AM
Plato
Note that the triangle is isosceles so $x=y$.
$y = \left( {90} \right)\sin \left( {\frac{\pi }{4}} \right)$
• Apr 1st 2008, 04:55 AM
mr fantastic
Quote:

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.