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Let PQR be a right angled isosceles triangle, right angled at P (2,1). If the equation of the line QR is 2x + y = 3

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Let PQR be a right angled isosceles triangle, right angled at P (2,1). If the equation of the line QR is 2x + y = 3, then the equation representing the pair of lines PQ and PR is

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Best answer

Correct option: (b)

Explanation:

Let S be the mid point of QR and given Δ PQR is an isosceles.

Therefore, PS ⊥ QR and S is mid point of hypotenuse, therefore, S is equidistant from P, Q, R.

. ..  PS = QS = RS

.'. Equation of PQ and PR are

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