If in a triangle `ABC,4sin A = 4 sin B=3 sin C`, then `cos C=`

If in a triangle ABC, 4 sin A= 4 sin B=3 sin C , the cos C=

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 triangle ABC, if cos A cos B+sin A sin B sin C=1, then a:b:c is equal to

In Delta ABC, sin A: sin B: sin C is

If in a triangle ABC ,(sin A+sin B +sin C)(sinA+sinB-sin C)=3sinAsinB then angle C is equal to

In any triangle ABC if sin A sin B sin C+ cos A cos B=1 , then show that a:b:c=1:1: sqrt(2) .

In triangle ABC, sinA sin B + sin B sin C + sin C sin A = 9//4 and a = 2 , then the value of sqrt3 Delta , where Delta is the area of triangle, is _______

In triangle ABC, sinA sin B + sin B sin C + sin C sin A = 9//4 and a = 2 , then the value of sqrt3 Delta , where Delta is the area of triangle, is _______