00:01
There's a couple of things to understand about this problem.
00:05
And it's interesting that they give you radians up here of 3 pi over 8.
00:10
So a lot of students are familiar with 90 degrees, but that would be pi over 2 radiance.
00:18
And across from the right angle is always the hypotenuse.
00:23
So the hypotenuse is 465 in this problem.
00:27
And the first question is, what is the opposite side? well, if you want the opposite and you have the hypotenuse, just go back to sokotoa, well, it was right there.
00:40
Opposite and hypotenuse is the sign function.
00:44
And the other thing is, i guess i should have said it from the get -go, is we need to be in radian mode on your calculator to do this.
00:53
So to answer the first question, it's sign of 3 pi over 8, sign of the angle, over.
01:01
I'm going to call the opposite side x because it doesn't really matter over 465.
01:07
And to solve for x, you cross multiply.
01:10
You want to get rid of 465, you multiply it.
01:15
So i'm just going to my calculator and typing that in in radium mode 465 times sine of 3 pi over 8 gives me an answer for x to be 429 .60.
01:34
So doing the next question, it says the side adjacent.
01:39
Well, adjacent in hypotenuse is going to be pretty much the same work, except it is cosine is adjacent over hypotenuse...