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DE is a tangent to the circumcircle of ΔABC at the vertex A such that DE || BC. If AB = 17 cm, then the length of AC is equal to
Answer & Solution
Correct Answer:
Option
D
According to question
Given:
DE || BC, AB = 17 cm, AC = ?
∠DAB = ∠ACB
(By alternate segment theorem)
∠DAB = ∠ABC
(Alternate angle)
∴ ∠ABC = ∠ACB
AB = AC = 17 cm
Given:
DE || BC, AB = 17 cm, AC = ?
∠DAB = ∠ACB
(By alternate segment theorem)
∠DAB = ∠ABC
(Alternate angle)
∴ ∠ABC = ∠ACB
AB = AC = 17 cm
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