Geometryhard · Past Paper
The equation of the normal to the circle x^2 + y^2 = 25 at (3, 4) is:
A4x - 3y = 0
B3x - 4y = 0
C3x + 4y = 25
D4x + 3y = 25
✓ Correct Answer: A — 4x - 3y = 0
The normal to a circle at any point passes through the center (0,0). Line through (0,0) and (3,4) is y = (4/3)x => 4x - 3y = 0.
Share this question
More from Geometry
- The angle subtended by an arc at the center is 120 degrees. What is the angle subtended by the same arc in the major segment?
- The perimeter of an equilateral triangle is 18 cm. Its area is:
- A triangle with one angle equal to 90 degrees is known as a:
- A median of a triangle divides it into two triangles of:
- Which quadrant does the point (-2, -3) lie in?