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

If B = 3A and A = C, then find B : C.

If A = 3a - 2b, B = -2a + 3b and C = - a - b, then find A + B +C.

Let a, b, c be the sides of a triangle and let A, B, C be the respective angles. If b+c=3a, then find the value of the ratio cos((B-C)/2)/cos((B+C)/2)

If A : B : C = 2 : 3 : 4, then find (A)/(B) : (B)/(C) : (C)/(A)

If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.

If a : b = 3 : 7 and b : c = 14 : 5, then find a : b : c.