Jee Main
Properties Of Triangle
JEE Main 2023 (Online) 12th April Morning Shift
MCQ+4 / -12023
In a triangle ABC, if \(\cos \mathrm{A}+2 \cos \mathrm{B}+\cos C=2\) and the lengths of the sides opposite to the angles A and C are 3 and 7 respectively, then \(\mathrm{\cos A-\cos C}\) is equal to