AM-2343
Equation of a circle (centre–radius form)
A Math · Secondary 4 · Medium · Equation of a circle (centre–radius form)
A line has equation . A circle has centre and radius 5.
Is the line tangent to the circle?
Is the line tangent to the circle?
- No, because the distance is less than the radius.
- Yes, because the distance equals the radius.
- No, because the distance is greater than the radius.
- Yes, because the line passes through the centre.
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