For a ` A B C ,` it is given that `cos A+cos B+cos C=3/2` . Prove that the triangle is equilateral.

In a triangle ABC ,cos A + cos B + cos C = 3/2 , then the triangle ,is

112. If in a Delta ABC,cos A+cos B+cos c=(3)/(2). Prove that Delta ABC is an equilateral triangle.

If cos A+cos B+cos C=(3)/(2) in a Delta ABC, then the triangle is

In a triangle A B C , if cos A+2\ cos B+cos C=2. prove that the sides of the triangle are in A.P.

If in a Delta ABC, c(a+b) cos B//2 = b(a+c) cos C//2 , prove that the triangle is isosceles.

In Delta ABC, if cos A+cos B+cos C=(3)/(2) then the triangle is (i) Isosceles (ii) equilateral (iii) Right Angled (iv) none pf these

In a triangle ABC, a cos A+b cos B+ c cos C=

For any triangle ABC,prove that a cos A+b cos B+c cos C=2a sin B sin C

In any Delta ABC, prove that :a cos A+b cos B+c cos C=2a sin B sin C