Question on triangometry, where i can put angle

[r-soy]

I face problem when i try to put the angle into the drwing

like ... :

 

[Borek]

Before drawing the triangle draw the chasm and the bridge. Seriously.

And it is trigonometry. And it is not other sciences question, but Precalculus mathematics.

 

[k-rod AP 2010]

if you put 30m on the long side between b and c, it should make more sense. try to think of where the bridge begins and what direction it rises. the angle should go where the height begins to rise towards the higher side of the chasm

 

[Borek]

That's why I suggested to draw it first, it is much easier to fit the triangle to the correct picture.