00:01
I'm going to start off by working with this smaller right triangle down here at the bottom.
00:08
And what i want to find is this side that measures x.
00:16
Okay.
00:18
So i'm going to pull it kind of off to the side here so we can isolate it.
00:29
So i have an angle in the opposite side and x is adjacent to that.
00:35
So i'm going to use a tangent ratio.
00:38
Say tangent of 27 degrees equals 9 over x.
00:42
So x is 9 divided by the tangent of 27 degrees.
00:50
Grab my calculator.
00:52
I want to check my mode to make sure i'm in degree mode.
00:55
9 divided by tangent of 27.
00:59
It's going to give me approximately 17 .66.
01:06
Now i'm going to go back to my diagram and i'm going to fill in that measure because now i know that that side measures 17 .66.
01:20
Okay.
01:21
And i'm now going to consider this large right triangle...