Question

Find the distance between the following pairs of points:
$(a\cos \theta ,a\sin \theta )$ and $(a\cos \varphi ,a\sin \varphi )$

Answer 1

Distance Between given points $\sqrt{a^2(\cos \theta -\cos \varphi {)}^2+a^2(\sin \theta -\sin \varphi {)}^2}=a\sqrt{(\cos \theta -\cos \varphi {)}^2+(\sin \theta -\sin \varphi {)}^2}$