RRB Junior Engineer Stage 1 Model Papers 2

Question : 10 of 99

Marks: +1, -0

AB is the chord of a circle with centre O and DOC is a line segment originating from a point D on the circle and intersecting, AB produced at C such that BC = OD. If ∠BCD = 20°, then ∠AOD = ?

20°
30°
40°
60°

Validate

Solution:

BC = DO = OA
∠

DAB = 90°

∠DOA = 2 × DCA = 40°

Go to Question:

Prev Question

Next Question