Given the circle below with secant PON― and tangent MN―, find the length of PO―. Round to the nearest tenth if necessary.
Step 3: Solve for PO: PO=14420=7.2
Step 1 :Step 1: Apply the secant-tangent theorem: MN2=PN⋅PO.
Step 2 :Step 2: Plug in given values: 122=20⋅PO.
Step 3 :Step 3: Solve for PO: PO=14420=7.2