## Question

### Solution

Correct option is

None of these

Let O(0, 0) be the orthocentre; A(h, k) the third vertex; B(–2, 3) and C(5,–1) the other two vertices.

Then the slope of the line through A and O is k/h, while the line throughB and C has the slope (–1 –3)/(5 + 2) = –4/7. By the property of the orthocentre, these two lines must be perpendicular, so we have Also Which is not satisfied by the points given in options.

#### SIMILAR QUESTIONS

Q1

Let P = (–1, 0), Q = (0, 0) and be three points. Then the equation of the bisector of the angle PQR is

Q2

A straight line through the origin O meets the parallel lines 4x + 2y = 9 and 2x + y + 6 = 0 at points P and Q respectively. Then the point O divides the segment PQ in the ratio.

Q3

Let A0A1 2 A3 A4 A5 be a regular hexagon described in a circle of unit radius. Then the product of the length of the line segments A A1A0 A2and A0 A4 is

Q4

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Q5

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Q6

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Q7

If sum of the distances of a point from two perpendicular lines in a plane is 1, then its locus is

Q8

If the circumcentre of a triangle lies at the origin and centroid is the middle point of the line joining the points (a2 + 1, a2 + 1) and (2a, –2a), then the orthocenter lies on the line.

Q9

If abc are unequal and different from 1 such that the points are collinear, then

Q10

The line L has intercepts a and b on the coordinate axes. The coordinate axes are rotated through a fixed angle, keeping the origin fixed. If p andq are the intercepts of the line L on the new axes, then 