Section of a line#!#Construction of tangent

Division of a life segment in a given ratio |Construction of tangent to a circle

A large section of a hotel under construction collapse in New Orleans last Saturday.

Draw a circle of radius 4 cm. Construct a pair of tangents to it, the angle between which is 60^(@) . Also justify the construction. Measure the distance between the centre of the circle and the point of intersection of tangents.

Draw a circle with the help of a bangle. Take a point outside the circle. Construct the pair of tangents from this point to the circle.

Describe the principle, construction, theory and working of a tangent galvanometer.