Not sure if this is correct. I was following an example. Some how I think I did something wrong.
90 - 40 = 50
sin = 40º = .643
10 x .643 = 6.43
cos = 40º = .166
10 x .766 = 7.66
Notice ....
20 * sin40 =
20 * 0.642787609687 =
12.855
Does that make sense ??? (make sure your calculator is set to degree mode....)
Oops I meant
cos = 40º = .766
Let's see...using the Law of Sines, we have
b/sin40 = c/sin90 (sin90 = 1)
b/sin40 = 20
b =20sin40 = 12.855
wow my answer was way off.... thank you :)
i don't understand this part "b =20sin40" how did you get the 12.855
Yes it does, thanks!