Sec 3 Trigonometry Question - Please Help

• kkhing

  3 May 12, 22:30

  Hi,

  Could someone help me with part C of the question below? Thanks.

  

• Lee012lee

  4 May 12, 23:15

  Originally posted by kkhing:

  Hi,

  Could someone help me with part C of the question below? Thanks.

  

  First, find the area of the triangle ABC by using the formula 0.5 x a x b sin C.

  Next, with the area, find the height of the triangle ABC by Area = 0.5 x b x h.

  At the base of the height, label it as F

  Next, use Pythagoras Theorem to find FD.

  Tan angle ADE = - tan angle ADF = - AF / FD