[(sin A)/(4)=(sin B)/(5)=(sin C)/(6)" ,the value of "cos A+cos B+cos C" is equa "],[[" (B) "1/3," (C) "2/5," (D) "23/1]]

Similar Questions

Explore conceptually related problems

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 Delta ABC , if ( sin A)/(4) = (sin B)/(5) = (sin C)/( 6) then the value of cos A +cos B +cos C =

If sin A+sin B + sin C =3, then the value of cos A + cos B + cos C is

In triangle ABC if (sin A)/(7)=(sin B)/(6)=(sin C)/(5) show that cos A:cos B:cos C=7:19:25

Prove that a cos A+b cos B+c cos C=4R sin A sin B sin C

If A+B+C=270^(@), then the value of cos 2A +cos 2B + cos 2C + 4 sin A sin B sin C is-

If A+B+C=(pi)/(2) , then prove that cos 2A + cos 2B + cos 2C=1+4 sin A sin B sin C .

If A+B+C=180^(@) then the value of cosec A(sin B cos C+cos B sin C) is

If A+C=2b, then the value of (cos C - cos A)/(sin A-sin C) is-

If sin A sin B sin C+cos A cos B=1 then the value of sin C=