By vector method show that ,
an angle inscribed in a semi - circle is a right angle ,

Prove that an angle inscribed in a semi-circle is a right angle using vector method.

Using vector method show that the diagonals of a rhombus are at right angles .

The area of the triangle inscribed in a circle of radius 4 and the ratio of its angles in the ratio 5:4:3 is

Let ‘O’ be the centre of a circle, PQ is a diameter, then prove that angle PRQ = 90^@ (OR) Prove that angle in a semi-circle is right angle.

In any triangle ABC if cosA=sinB-cosC then show that any angle of the triangle is a right angle.

Answer any One question : prove that semicirular angle is a right angle.

Semi-circular angle may or not right angle

Rectangles are inscribed inside a semi-circle of radius rdot Find the rectangle with maximum area.

The angle in circle produced by a minor arc is an obtuse angle.

Show that height of the cylinder of greatest volume which can be inscribed in a right circular cone of height h and semi vertical angle alpha is one-third that of the cone and the greatest volume of cylinder is 4/(27)pih^3tan^2alphadot