Question

Find c if a=2.73 mi, b=3.39 mi and angle C =41.7 degrees.

Answer 1

Do you know the Law of Cosines?

Answer 2

Yes, it is \[c ^{2}=a ^{2}+b ^{2}-2abcos(C)\] correct?

Answer 3

Which would be \[c ^{2}=(2.73)^{2}+(3.39)^2-2(2.73)(3.39)\cos(41.7)\] when everything is plugged in, resulting in c=2.26389? Did I compute that correctly?

Answer 4

I got c = 2.26389 too. So yes you calculated correctly

Answer 5

Thank you!