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05-05-2020
Mathematics

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In the diagram of circle K, tangents are drawn from point A to points B and C on the circle. If arc mBC = 96, then what is the measure of angle A.

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MathPhys MathPhys

13-05-2020

Answer:

∠A = 84°

Step-by-step explanation:

Since AB and AC are tangent to the circle, ∠ABK = 90° and ∠ACK = 90°.

Angles of a quadrilateral add up to 360°, so:

∠A + 90° + 90° + 96° = 360°

∠A = 84°

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