00:01
Okay, so here we want to find the coordinates for this point.
00:06
So first we draw the x axis and the y axis.
00:18
So next we're going to draw a perpendicular line from the point to the x axis.
00:30
So now we have a right triangle.
00:32
And so name this point, we need the x, horizontal, and the vertical shifts.
00:39
So first thing, we're going to look at theta.
00:42
Which is 225 degrees and obviously it's in the third quadrant and the reference angle for this theta prime is going to be 225 degrees minus 180 degrees which should be 45 degrees so the angle here is see it should be 45 degrees so this is see it should be 45 degrees so this is right triangle that has 45 45 degrees so this is a special right triangle 45 45 degree wide triangle okay and what do we know about the relationships between the sides of 45 45 to be right triangle the first thing is the two legs are equal this is an acacillus triangle right two sides these two sides are the same have the same value and the longest side is equal to, let's see, the longest side is equal to, let's say, 10, hypotenuse is equal to either one of the sides times square of two.
02:08
So it's square of two times one of the sides, okay.
02:14
And i want to find one of the sides...