A straight line through the vertex `P` of a triangle `PQR` intersects the side `QR` at the point `S` and the circuecirele of the triangle `PQR` at the point `T.` If `S` is not the centre of the circumeircle, then

A straight line through the vertex P of a triangle P Q R intersects the side P Q at the point S and the circumcircle of the triangle P Q R at the point Tdot If S is not the center of the circumcircle, then 1/(P S)+1/(S T) 2/(sqrt(Q S x S R)) 1/(P S)+1/(S T) 4/(Q R)

A straight line through the vertex P of a triangle P Q R intersects the side Q R at the points S and the cicumcircle of the triangle P Q R at the point Tdot If S is not the center of the circumcircle, then 1/(P S)+1/(S T) 2/(sqrt(Q SxxS R)) 1/(P S)+1/(S T) 4/(Q R)

A straight line through the vertex P of a triangle P Q R intersects the side Q R at the points S and the cicumcircle of the triangle P Q R at the point Tdot If S is not the center of the circumcircle, then 1/(P S)+1/(S T) 2/(sqrt(Q SxxS R)) 1/(P S)+1/(S T) 4/(Q R)

A straight line through the vertex P of a triangle P Q R intersects the side Q R at the points S and the cicumcircle of the triangle P Q R at the point Tdot If S is not the center of the circumcircle, then 1/(P S)+1/(S T) 2/(sqrt(Q SxxS R)) 1/(P S)+1/(S T) 4/(Q R)

Write the : Side opposite to the vertex Q of triangle PQR

In a triangle PQR mark the points X, Y, Z in the interior of triangle PQR

In a triangle PQR mark the points A, B, C in the exterior of triangle PQR

Take any point O in the interior of a triangle PQR. Is OQ+OR>QR?