AP is a tangent to a circle with centre O OA = 16 AP=30 OP=x Find x
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we know that radius drawn from point of contact make 90° angle at point of contact·
∴OAP is an right angled triaNGLE us
using pythagoras theorem
op²=ap²+oa²
30²-16² =ap²
900-256=ap²
644 =ap²
25.377 =ap
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