in the given figure of AP and AQ are tangents and AP = 10 cm. Find the perimeter of triangle AXY About the author Ivy
Answer: Join OA. Triangles OPA and OQA are congruent. ⇒∠PAO=∠QAO=45 o Tangent and radius are perpendicular at the point of contact. ∠OPA=90 o ⇒∠OAP=∠AOP=45 o ⇒OP=AP=4cm So the radius of the circle is 4 cm. Reply
Answer:
Join OA.
Triangles OPA and OQA are congruent.
⇒∠PAO=∠QAO=45
o
Tangent and radius are perpendicular at the point of contact.
∠OPA=90
o
⇒∠OAP=∠AOP=45
o
⇒OP=AP=4cm
So the radius of the circle is 4 cm.