In ` A B C ,=` if `(a+b+c)(a-b+c)=3a c ,` then find `/_Bdot`

If an a triangle A B C , b=3ca n d C-B=90^0, then find the value of tanB

In a triangle ABC if b+c=3a then find the value of cot(B/2)cot(C/2)

If the equation |z-a|+|z-b|=3 represents an ellipse and a ,b in C ,w h e r ea is fixed, then find the locus of bdot

If a + b + c = 0 and a^(2) + b^(2) + c^(3) = 4, them find the value of a^(4) + b^(4) +c^(4) .

If | vec a|+| vec b|=| vec c|a n d vec a+ vec b= vec c , then find the angle between vec aa n d vec bdot

If three unit vectors vec a , vec b ,a n d vec c satisfy vec a+ vec b+ vec c=0, then find the angle between vec aa n d vec bdot

In a △ A B C , A = 30 ∘ , B = 60 and c=10. Find a and b.

If the middle points of the sides B C ,C A , and A B of triangle A B C are (1,3),(5,7), and (-5,7), respectively, then find the equation of the side A Bdot

If sides of triangle A B C are a , ba n dc such that 2b=a+c then b/c >2/3 (b) b/c >1/3 b/c<2 (d) b/c<3/2

If A ,B ,C ,D are four distinct point in space such that A B is not perpendicular to C D and satisfies vec A Bdot vec C D=k(| vec A D|^2+| vec B C|^2-| vec A C|^2-| vec B D|^2), then find the value of kdot