AB is a diameter of a circle and AC is its chord such that `angleBAC=30^(@)`. If the tengent at C intersects AB extended at D, then BC=BD.

In the given figure AB is the diameter and AC is the chord of a circle such that /_BAC=30^(@) . The tangent at C intersects AB produced at D. Prove that :BC=BD.

AB is a diameter and AC is a chord of a circle with centre O such that angleBAC=30^@ . The tangent at C intersects AB at a point D. Prove that BC=BD.

AB is the diameter and AC is a chord of a circle with centre O such that angle BAC=30^(@) . The tangent to the circle at C intersects AB produced in D. Show that BC=BD.

In the figures AB is a diameter and Ac is chord of the circle such that angleBAC=30^(@) . If DC is a tangent , then DeltaBCD is ……

Seg AB is a diameter of a circle with centre P. Seg AC is a chord. A secant through P and parallel to seg AC intersects the tangent drawn at C in D. Prove that line DB is a tangent to the circle.

PQ is a diameter of a circle and AB is such a chord of it that it is perpendicular to PQ . If C be the point of intersection of PQ and AB , then prove that PC.QC=AC.BC .

AB is diameter of a circle with centre 'O'. CD is a chord which is equal to the radius of the circle. AC and BD are extended so that they intersect each other at point P. Then find the value of angleAPB .

AB is the diameter of a circle whose centre is O. DC is a chord of that circle. If DC||AB and angleBAC=20^(@) then angleADC =?