Prove that the tangents drawn at the ends of a chord of a circle make equal angles with the chord.
According to question
To Prove :
X1, Y1, X2, and Y2 are tangents at points A and B respectively.
Take a point C and join AC and AB.
Now …..(i) (Angle in the alternate segment)
Similarly,
…..(ii)
From equation (i) and (ii)
…..(iii)
From equation (3)
Hence Proved