Question

In a triangle ABC, find the maximum value of cosA+cosB+cosC

Answer 1

$\huge\underline\mathfrak\red{✨Answer✨}$

The maximum value can be obtained cos a = cos b= cos c. You have to add the three values and they are equal . b and then add all the three values as a+b+c = 180. So a= b= c =60.