An engineer on the ground is looking at the top of a building. The angle of elevation to the top of a building is 38º. The engin
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Check the picture below.
first off, often times some graphs say "not to scale", but sometimes that's accidental, sometimes is simply misleading, in this case is misleading.
since ∡ABC = ∡ACE, then the triangles look more or less like the ones in the picture on the right-hand-side.
and notice the red and green angle tickmarks, that simply means the triangles are similar by AA.
that said, we can use proportions, in this case from the large triangle's sides are atop and the small one's are at the bottom.
first off, often times some graphs say "not to scale", but sometimes that's accidental, sometimes is simply misleading, in this case is misleading.
since ∡ABC = ∡ACE, then the triangles look more or less like the ones in the picture on the right-hand-side.
and notice the red and green angle tickmarks, that simply means the triangles are similar by AA.
that said, we can use proportions, in this case from the large triangle's sides are atop and the small one's are at the bottom.
Check the picture below.
so, notice, the composite is just a 4x6 rectangle, and a triangle whose base is 6 and altitude is 2. So, we can simply get the area of each figure and sum them up.
so, notice, the composite is just a 4x6 rectangle, and a triangle whose base is 6 and altitude is 2. So, we can simply get the area of each figure and sum them up.