Question

a point p is 20cm from the centre of a circle . the radius of the circle is 7cm and length of the tangent drawn from P to the circle is​

Answer 1

Answer:

1. draw a tangent from p to circle
2. join point p and center of the circle
3. join center and the point at which tangent touches the circle
4. since tangent always makes angle=90° with respect to the radius joined to it the triangle is a right triangle
5. use Pythagoras theorem to find the length of the other side which is the length of the tangent