00:01
Okay, so let's say we have a circle, which is a random circle, and there is a point negative 12, 5 on its circumference.
00:12
Our test is to find the six trig values of this triangle here, of this angle there, if that triangle was in the standard position.
00:26
So it's in the first quadrant.
00:28
So let's do it.
00:30
So let's help ourselves by drawing out the triangle itself.
00:35
Okay, and it has the angle theta and the x coordinate, which is going to be the x length, that's going to be 12, and the height, which is going to be 5.
00:49
And so using the pythagorean theorem, we can find the hypotenuse pretty easily.
00:57
That's going to be 144 plus 25.
01:01
That's gonna be 169, which is 13.
01:05
So the hypotenuse is going to be 13.
01:09
All right, 13, right there.
01:13
Okay, so now let's define our trick functions...