Question

question no. 31 & 32

In the figure O is the center of circle and OM ON are perpendiculars from center to the chords PQ andRS.if OM=ON and PQ=6cm.find RS

1.  Theorem 6.2 - If a line divides any two sides of a triangle in the same ratio then the line is parallel to the third side

1.  Theorem 6.2 - If a line divides any two sides of a triangle in the same ratio then the line is parallel to the third side

If tan(A+B)=m and (tan A-B)=n,find tan 2A