Categories > circle > Tangent and normal to a circle > The condition that the line $x\cos \alpha +y\sin \alpha =p$ may touch the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ is

circle

Question: The condition that the line $x\cos \alpha +y\sin \alpha =p$ may touch the circle ${{x}^{2}}+{{y}^{2}}={{a}^{2}}$ is


1) $p=a\cos \alpha $
2) $p=a\tan \alpha $
3) ${{p}^{2}}={{a}^{2}}$
4) $p\sin \alpha =a$
Solution: Explanation: No Explanation
Tangent and normal to a circle

Rate this question:

★ ★ ★ ★ ★

Average rating: (0 votes)

Previous Question Next Question

Related Questions