Find all the missing parts to the triangle below.

http://static.k12.com/eli/bb/817/-1/0/2_36847_44974/-1/5f949d8f893fa247cefb9c3be1a4130a44ba1245/media/d40ea57ffd4723c6bfdde50bf520f1b9aec65c92/mediaasset_651269_1.gif

Question

Find all the missing parts to the triangle below.

http://static.k12.com/eli/bb/817/-1/0/2_36847_44974/-1/5f949d8f893fa247cefb9c3be1a4130a44ba1245/media/d40ea57ffd4723c6bfdde50bf520f1b9aec65c92/mediaasset_651269_1.gif

anonymous · Answer

Please help.

tylerd · Answer

use law of cosines to find length of f

then law of sines to find the rest

tylerd · Answer

$$f^2=15^2+28^2-2(15)(28)\cos(87)$$

tylerd · Answer

thats law of cosines

tylerd · Answer

law of sines is

$$\frac{ Sin(A) }{ a }=\frac{ Sin(B) }{ b }=\frac{ Sin(C) }{ c }$$

when

|dw:1408137842009:dw|