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• a challenge for targetiitians
  let a,b,c,d represent coplanar vectors and sin(A)a + 2sin(2B)b + 3sin(3C)c - 4d = 0 then find the least value of sin(A)^2 +sin(2B)^2 + sin(3C)^2 is.... 1. 7/8 2. 8/7 3. 1 4. 2/3 ...
  0·29· #Mathematics#Co-ordinate Geometry
  replied2018-03-29 06:19:37