00:01
So when i'm given two things, first i want to figure out which quadrant am i in.
00:05
So first i know that tangent is equal to negative 12 over 5.
00:10
Okay, so it's negative, so i'm either in, so x and y are different values, so this is the second or the fourth quadrant.
00:16
And i also know that cosine is less than zero or negative.
00:20
Cosine is related to my x value, so if my x is negative, i'll be in the second quadrant.
00:25
I can create a right triangle given an angle.
00:30
Tangent is what over what? well, it's opposite over adjacent.
00:34
Opposite side is 12, adjacent side is 5.
00:38
But which one is negative? well, since the x value is with the 5 and it's negative, 5 will be negative, whereas the 12's with the y and it will be positive.
00:49
Here, i could find my hypotenuse...