Steps of Construction
Step 1: Draw a circle with center O and radius 3.5 cm.
Step 2: Extends its diameter on both sides and mark two points A and B on it such that
OA = OB = 5 cm.
Step 3: Draw the perpendicular bisectors of OA and OB. Let C and D be the mid-points of OA and OB, respectively.
Step 4: Draw a circle with C as center and radius OC (or AC), to intersect the circle with center O, at the points R and S.
Step 6: Join AP and AQ, Also, join BR and BS.
Here, AP and AQ are the tangents to the circle from A, Also, BR and BS re the tangents to the circle from B.