00:01
In problem number seven, i have sides of a right triangle that measure 39, 52, and 65, and i want to find angle u.
00:16
So you have your choice of trig functions to use.
00:20
I'm going to use a sign function.
00:23
So the sign of u is going to equal the side opposite u over the hypotenuse, which is the side opposite the right -aprudence.
00:32
To get the angle, you use the inverse sign.
00:39
Grab your calculator and make sure that you are in degree mode.
00:44
Press 2nd, sign, 52, divided by 65.
00:49
You're going to get 53 .13 .13.
00:53
So about 53 .1 degrees for that angle.
01:00
Similarly, in number 8, we want to find now angle.
01:08
G so again you can choose your trig function i'm going to use a cosine this time adjacent side over hypotenuse use your inverse cosine press second cosine 63 divided by 87 you're going to get 43 .603 so 43 .6 degrees now we want to solve in this next section.
01:45
So i have a, b, and c.
01:49
I have a 60 degree angle and a hypotenuse of 22.
01:56
Okay, so i know that angle c has to be 90 minus 60, so angle c is just going to be 30 degrees...