00:01
All right, in this one, it says, determine the remaining sides and angles of each triangle.
00:05
So basically the picture in the book gives an actual picture of a triangle, not this information.
00:13
I've just pulled this.
00:15
So you can find angle c because you're given two.
00:19
So you take 180 minus the sum of 37 and 48.
00:25
So that's 180 minus 85, which is 90.
00:36
You need to do that first and then now you can solve for both sides so you can say it's just with law of signs so 18 over the sign of 95 equals a over sign of 37 same thing for b you can go 18 over the sign of 95 equals b over the sign of 95 equals b over the sign of the angle which is 48.
01:08
Cross multiply.
01:10
So you get a, sign 95 equals 18, sign of 37, divide by a sign of 95...