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Find the measurement of angle ABC

Find the measurement of angle ABC-example-1
User Ronencozen
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first you have to solve for the other angle (3x-70) so, 3x=70 and x=70/3

now that you have the complementary angle of 70/3 degrees, subtract 180-70/3 to get 156 2/3 degrees as your final answer
User Uygar Donduran
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