and a+b+c = 180° since it comprises a straight angle. Therefore, with the given value of b and c, we can simply add it ( 83° + 40° = 123° ), and subtract the sum from 180° to know the value of a
So, we have
a = 180° – 123°
a = 57°
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PriJhaaa
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Answers & Comments
Answer:
a = 57°
Step-by-step explanation:
Just take note that a straight angle is 180°
and a+b+c = 180° since it comprises a straight angle. Therefore, with the given value of b and c, we can simply add it ( 83° + 40° = 123° ), and subtract the sum from 180° to know the value of a
So, we have
a = 180° – 123°
a = 57°