ln/_ABC," the value of "cos(A-B)-cos(C)" is "

ABC is a right angled triangle with angleA=90^(@) .Then the value of cos^(2)A+cos^(2)B+cos^(2)C is :

If in a triangle ABC,(sin A)/(4)=(sin B)/(5)=(sin C)/(6), the value of cos A+cos B+cos C is equal to

In a Delta ABC, the value of (a cos A+b cos B+c cos C)/(a+b+c) is equal to

In triangle ABC,/_C=(2 pi)/(3) then the value of cos^(2)A+cos^(2)B-cos A*cos B is equal

Consider a triangle ABC in which cos A + cos B + cos C = sqrt(3) "sin"(pi)/(3) What is the value of cos((A+B)/(2))cos((B+C)/(2))cos((C+A)/(2)) ?

If ABC is a right angled triangle, then the value of (cos ^(2)A +cos ^(2) B+ cos ^(2)C) is -

In o+ABC, if cot A+cot B+cot C=0 then find the value of cos A cos B cos C

If in a triangle ABC , sin A =cos B , then the value of cos C is

In Delta ABC, if cot A+cot B+cot C=0 then find the value of cos A cos B cos C.