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emmainna [20.7K]
2 years ago
10

Work out the values of a, b, c and d. ​

Mathematics
1 answer:
AlexFokin [52]2 years ago
5 0

Step-by-step explanation:

The are two angles ie. 45 and 80 than find the third angle

80 will be vertically opposite and alternative angle to a

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You can use a calculator for this question.
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