00:02
Okay, here at number 32, we want to convert negative 45 degrees to radians.
00:11
And don't let the negative throw you off.
00:13
It has nothing to do with the conversion process.
00:16
In fact, i'm not even going to consider the negative when i'm converting it.
00:19
I'll just throw it back in at the end.
00:21
A negative degree angle measure is going to be a negative radian angle measure.
00:25
It has nothing to do with the conversion.
00:28
And what you need to know is that to convert from degrees to radiance, you're going to take your given angle measure and multiply by pi over 180 degrees.
00:42
That's a conversion ratio, right? because pi and 180 are the same thing.
00:47
But we're going to convert out of degrees into radiance.
00:50
And again, we don't really worry about the negative at all.
00:54
So take negative 45 degrees and we're going to multiply.
00:59
By pi over 180 degrees.
01:04
And again, technically this is a unit conversion.
01:07
So the degree units are going to cancel.
01:10
And we're left with negative 45 pi over 180...