Small question. I'm a little stupid but here it goes. Can you draw a tangent to a circle with radius $5 cm$ from a point $3 cm$ away from centre of the circle?
a) Yes
b) No
c) Either yes or no.
The thing is that I said NO but all of my friends say YES.
For any point $P$ in the interior of your circle, every line through $P$ meets the circle in two points, hence cannot be a tangent to the circle.
As an example, suppose that the circle is given by $x^2 + y^2 = 25$, and the point is $(3, 0)$. Then any line through the point must be $$ A(x-3) = By $$ for some $A$ and $B$, not both zero.
Substituting to find intersections, we get $$ x^2 + y^2 = 25 \\ x^2 + \left( \frac{A(x-3)}{B} \right)^2 = 25\\ x^2 + \left( \frac{A}{B}\right)^2 (x-3)^2 - 25 = 0. $$ That's a quadratic in $x$ with positive discriminant (you have to do some algebra to show this), hence has two solutions.