What is the m∠abc? m∠abc = 15° m∠abc = 45° m∠abc = 60° m∠abc = 75°
Asked by maham237 @ in Mathematics viewed by 400 People
Please help asap need for test
What is the m∠ABC?
m∠ABC = 15°
m∠ABC = 45°
m∠ABC = 60°
m∠ABC = 75°
Answered by maham237 @
m?ABC = 60°
Looking at the diagram, you have triangle ABC. For m?BAC you are given a value of 75°, m?ACB is a supplementary angle to 135° which means it has a value of 180° - 135° = 45°.
Finally, ?ABC is the 3rd angle of triangle ABC. Since all the angles in a triangle add up to 180°, you simply need to do the subtraction.
180° - 75° - 45° = 60°
Therefore m?ABC = 60°
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