Sir/madam, how to prove that equation of a straight line joining s and r on circle x²+y²=a² are xcos(s+r/2)+ysin(s+r/2)=acos(s-r/2) where a is the radius of the circle.also give the theory part behind it because I didn't find the explanation anywhere.
Sir/madam, how to prove that equation of a straight line joining s and r on circle x²+y²=a² are
xcos(s+r/2)+ysin(s+r/2)=acos(s-r/2) where a is the radius of the circle.also give the theory part behind it because I didn't find the explanation anywhere.