A lamp post is 10 ft tall and casts a shadow. The distance from the top of the lamp post to the tip of the shadow is 20 ft. What
is the angle of elevation to the top of the lamp post?
1 answer:
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First, you have to know the formula of finding the area of a triangle. That is bh1/2. You multiple the base and height together and multiply it by 1/2 or divide by 2. You put in the info they gave you in the formula, after that you get 105/8. That is obviously not one of the choices and it is an improper fraction. The way to make it into a whole fraction is to do 105 divided by 8. Then, you get 13, which is the second answer. Finally, the area of the triangle is 13 1/8 squared mm.
