Kemal G. answered • 05/23/17

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You can use the law of cosines. There is no need to use the law of sines to find side b.

If you draw the figure, you will see that based on the law of cosines you can write

b^2 = 14^2 + 8^2 - 2*14*8*cos(117 deg)

= 196 + 64 - 224*(-0.45)

= 360.8

b = 19 units (rounded to the nearest whole number)