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zysi [14]
3 years ago
9

In circle F, what is the measure of arc CB?

Mathematics
1 answer:
alukav5142 [94]3 years ago
4 0

Answer:

70° is the measure of arc CB

Step-by-step explanation:

In circle F

F is center of circle.

We need to find arc CB. It would be also same as central angle of CB at F (∠CFB)

∠CAB=35°

We can see ∠CAB and ∠CFB lie on same arc but ∠CAB on circle and ∠CFB at center.

If two angles subtended on same arc then the angle at the center is twice the angle at the lie on circle.

∴ ∠CFB = 2 ∠CAB

But ∠CAB = 35°

∠CFB=2 x 35° = 70°

Thus, 70° is the measure of arc CB

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