Answer :
Use law of sines. It says that the ratio of the sine of angles to their corresponding side are the same in any triangle.
Then sin(B)/AC = sin(A)/BC and ...
A = arcsin (sin(B)/AC * BC) = 52 degree approx
Use law of sines. It says that the ratio of the sine of angles to their corresponding side are the same in any triangle.
Then sin(B)/AC = sin(A)/BC and ...
A = arcsin (sin(B)/AC * BC) = 52 degree approx