In the adjoining figure, chords AC and BD of a circle with centre O, i

1.	In the adjoining figure, chords AC and BD of a circle with centre O, intersect at right angles at E. If ∠OAB=25∘, calculate ∠EBC.
Answer» In the adjoining figure, chords AC and BD of a circle with centre O, intersect at right angles at E. If $∠ O A B = 25^{\circ}, calculate ∠ E B C .$

In the adjoining figure, chords AC and BD of a circle with centre O, intersect at right angles at E. If ∠OAB=25∘, calculate ∠EBC.

Answer»

In the adjoining figure, chords AC and BD of a circle with centre O, intersect at right angles at E. If $∠ O A B = 25^{\circ}, calculate ∠ E B C .$