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I need some help pls
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I need some help pls

I need some help pls-example-1
User Oleg Eterevsky
by
5.3k points

1 Answer

3 votes

Answer:

160°

Explanation:

∠C and ∠D are both inscribed angles of arc AB. Therefore, they are equal.

5w + 20 = 7w − 4

24 = 2w

w = 12

Therefore, ∠C = ∠D = 80°.

Inscribed angles are half the central angle, so mAB = 2 × 80° = 160°.

User FBidu
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