Question 1007580: Please help me solve this trignometric problem.
NOTE: The solution to this problem is 46 degrees at the back of the textbook
But I dont know how to solve this problem.
While standing at the left corner of the schoolyard in front of her school, Suzie estimates that the front face is 8.9 m wide and 4.7 m high. From her position, Suzie is 12 m from the base of the right exterior wall. She determines that the left and right exterior walls appear to be 39 degrees apart. From her position, what is the angle of elevation, to the nearest degree, to the top of the left exterior wall?
Answer by MathLover1(20850)   (Show Source):
You can put this solution on YOUR website!
Drawing a picture or two on paper will help.
Suzie stands at 
Bottom of right wall is  , and
bottom of left wall is 
Right angle of the triangle is at
 is the hypotenuse of  meters; so,
to find out how far is Suzie from the left wall, we need to find the length 
Interior angle of triangle at is given as  degrees, so
Same as
Next part, same points and , but point at top of the left wall, nearest corner there at the top,  .
This makes triangle  . Understand from described,  .
Review...
Putting in values now,
 -----and you will not need hypotenuse  .
Use tangent function. Question asks for angle at point , but now for this "next part" triangle.  for this angle of elevation,
You want
 , to the nearest whole degree.
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