Of course I can't see where your Ø is
let's assume it is opposite the smallest side.
10^2 = 17^2 + 20^2 - 2(17)(20)cosØ
680cosØ = 589
cosØ = 589/680
Ø = appr 29.98°
If otherwise, make the necessary changes
Use the Law of Cosines to determine the indicated angle θ. (Assume a = 17, b = 10, and c = 20. Round your answer to one decimal place.)
1 answer
1 answer