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25.03.2021 •
Mathematics
What is the measure of angle a?
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Ответ:
Step-by-step explanation:
a=180-117=63°
b=180-81-63=31°
Ответ:
a = 63˚
Step-by-step explanation:
1. Recognize that any triangle = ∑180˚
2. 180-81-b-a=0
3. 180-117=63˚
Ответ:
zero and positive infinity
Step-by-step explanation: