E Maths - Trigo

• bonkysleuth

  9 Jul 09, 21:13

  In the figure, ABC is a straight line. CD = 7 cm, BC = 4 cm and sin angle DBC = 4/5 and cos angle DBA = 3/5. FInd, giving your answer as fraction in the lowest terms, the value of sin angle BDC. Ans : 16/35

  

  thanks to all.

• yiha093

  9 Jul 09, 21:36

  thx for answering ur own qn .

• MasterMoogle

  9 Jul 09, 22:36

  Originally posted by yiha093:

  thx for answering ur own qn .

  u so pro u do the working la

• eagle

  9 Jul 09, 23:39

  This is only 1 part of the question right?

  Use sine rule

  sin DBC / 7 = sin BDC / 4

  so sin BDC = 4/7 * 4/5 = 16/35

• yiha093

  10 Jul 09, 17:45

  Originally posted by MasterMoogle:

  u so pro u do the working la

  im a dumbass. haha !