In the figure,AB is the tangent at B of the circle centred at O.How much is `/_OBA`? How much is `/_AOB`?

In the figure, O is the centre of the circle squareA=60^o . squareC =______ .

In the figure, O is the centre of the circle squareA=60^o . squareBOD =______ .

In the figure, O is the center of the circle and A B and CD are chords with AB=CD Prove that angle < OAB=< OCD

In the figure, O is the centre of the large circle. Centre of the small circle is C. OP is a tangent to the small circle. angleBOQ=50^o . angleOAQ=......... . .

In the figure, O is the centre of the large circle. Centre of the small circle is C. OP is a tangent to the small circle. angleBOQ=50^o . angleAPO=....... . .

In the figure, O is the centre of the large circle. Centre of the small circle is C. OP is a tangent to the small circle. angleBOQ=50^o . anglePOQ=....... . .

In the figure, O is the centre of the large circle. Centre of the small circle is C. OP is a tangent to the small circle. angleBOQ=50^o . angleOCP=....... . .

In the figure, O is the centre of the circle and x^2+y^2=25 is the equation of the circle. What is the radius of the circle? .

In the figure, O is the centre of both the circles. AB and AC touch the small circle at P and Q.A,B and C are points on the large circle. Prove that Ab=AC . .