Question

Please help me

possible answers:

37 degrees
38 degrees
40 degrees
43 degrees​

Answer 1

38 degrees.

Explanation:

Using the Cosine Rule:

11^2 = 10^2 + 17^2 - 2*10*17cos A

cos A = (11^2 - 10^2 - 17^2) / (-2*10*17)

cos A = -268/-340 = 0.788235

m < A = 37.979