Question

Equation of tangents drawn from the origin to the circle

Answer 1

Answer:

Step-by-step explanation:

A pair of tangents are drawn from the origin to the circle x2+y2+20(x+y)+20=0 . Then find its equations. ... If the chord of contact of the tangents drawn from the point (h,k) to the circle x2+y2=a2 subtends a right angle at the center, then prove that h2+k2=2a2.