Answer:
a° = 167°, b° = 13°
Explanation:
since the angles in a triangle add to 180°, we can work out b°
90° (right angle) - 77° = 167°
180° - 167° = 13°
since the angle of a straight line is also 180°, a° would be 180° - 13° which is 167°.
A=167⁰, B=13⁰
A=167⁰
B=13⁰
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