00:01
Suppose i know that sine of my angle theta is 1 3rd.
00:03
My question is i want to find all angles between zero and 180.
00:06
Where is that? well, thinking about my reference angles, i have zero, 90, 180 is the negative x, 270, and 360 is one revolution around.
00:18
Okay, so in standard form, i'm just looking in the first and the second quadrant.
00:25
So sine on my axis, cosine is the same thing as x, and sine is the same thing as y.
00:32
So sine of theta or sine of my angle theta, i'm looking for where it's 1 3rd.
00:37
So first thing i'm gonna do, get data by itself.
00:40
What's the inverse of sine? the inverse of sine is sine inverse, literally on my calculator...
