Level:
Project ID:
1003024108
Accepted:
1
Clonable:
0
Easy:
0
Find the value of the parameter \( q\in\mathbb{R} \) for which the line \( x+2y-1=0 \) is a tangent of the circle \( x^2+y^2=q^2 \).
\( \frac{\sqrt5}5 \)
\( 5 \)
\( \sqrt5 \)
\( \frac15 \)
\( 1 \)