Q51 / 90 · JEE Main 2023 (30 Jan Shift 2) · Mathematics

Let Pa1, b1 and Qa2, b2 be two distinct points on a circle with center C(2,3). Let O be the origin and OC be perpendicular to both CP and CQ. If the area of the triangle OCP is 352, then a12+a22+b12+b22 is equal to  __________

Correct answer: 24

Solution

Given,

Pa1, b1 and Qa2, b2 be two distinct points on a circle with center C(2,3),

And O be the origin and OC be perpendicular to both CP and CQ,

So, PCQ will be a straight line

Now on plotting the diagram we get,

Figure

So, OC=22+32=5

Now let CP=CQ=I
Now by using area of triangle OCP=12×OC×I we get,

352=12×5×I⇒I=7

And OP=OQ=OC2+I2=12

So, a12+b12+a22+b22=OP2+OQ2=12+12=24

Hence, the correct answer is 24.

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