00:01
So in this problem, we're told to consider the angle that's shown in the diagram, and notice that it's a herds of radiance, and it says that the radius of the circle is five units, and we know that the vertical distance from the x -axis is three units, and the horizontal distance away from the y -axis is four units.
00:17
So the first thing we want to do is we want to find the sign of angle theta.
00:21
Well, keep in mind that theta would be this angle right here.
00:24
Well, notice we have a right triangle, where the height of this triangle is three, and this horizontal distance, would actually be four, which would mean because the radius is equal to five, that would be our hypotenuse.
00:36
So essentially, almost think we have a right triangle where this is data, this is four, three, and five.
00:42
So remember, the value of sign of theta is going to be the ratio of the opposite side over the hypotenuse...