FROM AN EXTERNAL POINT P,PA AND PB ARE TANGENTS TO THE CIRCLE WITH CENTRE O.IF CD IS ANOTHER TANGENT AT POINT E TO THE CIRCLE AND PA=12CM.FIND THE PERIMETER OF TRIANGLE PCD.
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Heya User,
--> Assuming that C and D lies on PA and PB √√
--> Mark point of tangency of CD with circle as X
--> We use the fact --> Tangents to a circle from a common external point are equal ..
Now,
--> PA = PB = 12cm
=> PA + PB = 24cm
=> PC + CX + PD + DX = 24cm --> [ CX = CA || DX = DB ]
=> PC + CD + PD = 24cm
=> Perimeter of triangle PCD = 24cm √√
--> Assuming that C and D lies on PA and PB √√
--> Mark point of tangency of CD with circle as X
--> We use the fact --> Tangents to a circle from a common external point are equal ..
Now,
--> PA = PB = 12cm
=> PA + PB = 24cm
=> PC + CX + PD + DX = 24cm --> [ CX = CA || DX = DB ]
=> PC + CD + PD = 24cm
=> Perimeter of triangle PCD = 24cm √√
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