To find side a we have to use the The Law of Cosines
a^2 = b^2 + c^2− 2bc cosA
a^2 = 16 + 64 - 2*4*8 cos 48
a = 6.1
Now we use the The Law of Sines to find the smaller of the other two angles.
sin B / b = sin A / a
sin B / 4 = sin 48 / 6.1
sin B = 0.487308082280
I am finishing the question, need few more minutes
B = 29 degrees
To find angle C is easy knowing that angles of a triangle add to 180 degrees
C = 180 -29+48 = 103 degrees
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