1.

In the given figure, AB is a chord of a circle with centre O and AB is produced to C such that BC = OB. Also, CO is joined and produced to meet the circle in D. If ∠ACD=25∘ then ∠AOD = ? (a) 50∘ (b) 75∘ (c) 90∘ (d) 100∘

Answer»

In the given figure, AB is a chord of a circle with centre O and AB is produced to C such that BC = OB. Also, CO is joined and produced to meet the circle in D. If ACD=25 then AOD = ?

(a) 50

(b) 75

(c) 90

(d) 100



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