Examveda
Examveda

AB is a diameter of the circle with centre O, CD is chord of the circle, If ∠BOC = 120°, then the value of ∠ADC is ?

A. 42°

B. 30°

C. 60°

D. 35°

Answer: Option B

Solution(By Examveda Team)

Geometry mcq question image
From figure ∠BOC = 120
∴ ∠AOC = 180 - 120 = 60
So, ∠ADC = $$\frac{1}{2}$$∠AOC
(Angle made on circumference is half of the angle made on centre)
= $$\frac{1}{2}$$ × 60
So, ∠ADC = 30°

This Question Belongs to Arithmetic Ability >> Geometry

Join The Discussion

Related Questions on Geometry