Question

AC = 3x -8, BC = -7 + 2x, and AB = 8.
Find BC.

Answer 1

Answer:

AB+BC+AC=180°

8 - 7 + 2x +3x -8= 180°

-7+5x=180°

x=180°+7/5

x=37.4°

again

BC=-7+2*37.4

=67.8°