Prove that in a rectangular hyperbola the angles subtended at its vertices by any chord which is parallel to its conjugate axis is supplementary .

Find the angle which is four times of its supplementary angle.

Distance between foci of a hyperbola is double the distance between its vertices . If the length of its conjugate axis is 6, then equation is

Prove that any two adjacent angles of a parallelogram are supplementary .

The angle subtended by a chord at its centre is 60^(@) , then the ratio between chord and radius is

Prove that equal chords of a circle subtend equal angles at the centre.

What is the measure of the angle which is one fifth of its supplementary part

Prove that the tangents at the extremities of any chord make equal angles with the chord.

In a rectangular hyperbola, prove that the product of the focal distances of a point on it is equal to the square of its distance from the centre of the hyperbola .

An angle is 3/2 xx its supplementary then the angle is