Question

1

A circle of radius 3 cm is drawn inscribed in a right angle triangle ABC, right angled at C. If AC is
10 Find the value of CB
A. 10.5cm
B. (20/7)√58 cm
C. 21/2 cm
D. None of these

Answer 1

The value of CB is option A. 10.5 cm

Answer 2

Option A

Explanation:

(x + 7)2 = 102 + (x + 3)2

(Tangents from the external point are equal)

⇒ x = 7.5cm ⇒ OB = x + 3 = 10.5 cm