00:01
Solve sign x equals negative 0 .11 on the interval from 0 to 2 pi.
00:08
So let's solve the equation.
00:10
We need to say that x is going to be the inverse sign of negative 0 .11.
00:17
So when i look at that, i'm going to go to my, make sure i have my calculator in radian mode.
00:28
And then i'm going to go inverse sign of negative point.
00:33
1 -1 and i'm going to come up with x equals to negative 0 .11.
00:47
So that is also going to be our answer in radiance.
00:51
However, that is not between 0 and 2 pi.
00:56
Let me rewrite that as 2 pi because it is negative.
01:01
So we need to see where that is in terms of our graph.
01:08
So i'm going to get this as a positive angle.
01:11
So i'm going to add 2 pi to that to get a positive coterminal angle.
01:16
So when i add 2 pi, i'm going to get 6 .17296.
01:26
It's because it says take it to two decimal places.
01:29
I'm going to say that's 6 .1730.
01:32
Now where is that located? we know this is 0.
01:36
This is pi over 2.
01:37
Which means it's 1 .57...