Plz help!!! will award medal!!

Max observes the zoo and the library from a helicopter flying at a height of 200 times square root of 3 feet above the ground, as shown below:
What is the distance between the zoo and the library?
A. 200
B.400
C.600
D.800

Question

Plz help!!! will award medal!!

Max observes the zoo and the library from a helicopter flying at a height of 200 times square root of 3 feet above the ground, as shown below:
What is the distance between the zoo and the library?
A. 200
B.400
C.600
D.800

anonymous · Answer

attachment

anonymous · Answer

@dan815 
@e.mccormick 
@ganeshie8 
@hartnn

anonymous · Answer

@mathstudent55

dan815 · Answer

You know of SOH CAH TOA?

anonymous · Answer

yes

dan815 · Answer

$$Tan\theta = \frac{Opp}{Adj}$$

dan815 · Answer

Use that to find these 2 lengths |dw:1404846312037:dw|

anonymous · Answer

I'm confused why would u use tan? and just in general how would u know  when to use which?

dan815 · Answer

subtract the smaller length from the biggest one and you can see that the left over distance must be from the 2 places of our journey

anonymous · Answer

and what do u do with the radical?

dan815 · Answer

You know special triangles?

dan815 · Answer

90 60 30 triangles are like this

anonymous · Answer

i use tangent for each one separately?

anonymous · Answer

no i don't know special triangles
i havent learned them

anonymous · Answer

I'm confused on what to do

dan815 · Answer

|dw:1404846530152:dw|