In a `Delta ABC,cos((B+2C+3A)/2)+cos((A-B)/2)=`

In Delta ABC, cos""((B+2C+3A)/(2))+ cos""((A-B)/(2))=

In Delta ABC, cos""((3A+2B+C)/(2))+ cos""((A-C)/(2))=

Delta ABC, cos ((B + 2C + 3A) / (2)) + cos ((AB) / (2)) =

In Delta ABC,(cos 2A)/(a^2) - (cos2B)/(b^2) = ......

In a triangle ABC,cos^(2)A+cos^(2)B+cos^(2)C=

In Delta ABC , (a)/( cos A) = (b) /( cos B ) = ( c ) /( cos C ) , If b= 2 then the area of the triangle is

In a Delta ABC, c cos ^(2)""(A)/(2) + a cos ^(2) ""(C ) /(2)=(3b)/(2), then a,b,c are in

In a Delta ABC, c cos ^(2)""(A)/(2) + a cos ^(2) ""(C ) /(2)=(3b)/(2), then a,b,c are in

In a Delta ABC, c cos ^(2)""(A)/(2) + a cos ^(2) ""(C ) /(2)=(3b)/(2), then a,b,c are in