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1. ## Trigenometry Question

I was having trouble with this question so if you know the answer please post it and tell me how you solved it:
You are looking up at the top of a building at 30 degrees. If the building is 20 m tall, how far are you from the building? Assume that you are 1.70 m tall.

Thanks

2. 31.71m

3. Originally Posted by ballsoftitanium
31.71m
how did you get that?

4. soh
cah
toa

5. 31.71m

6. Since you are 1.7m tall, the building is 18.3 taller than you are.
Let x = the distance you are from the building

tan(30) = 18.3 / x

x tan(30) = 18.3

x = 18.3 / tan(30)

I get 31.6965 and change

7. Originally Posted by skippy
Since you are 1.7m tall, the building is 18.3 taller than you are.
Let x = the distance you are from the building

tan(30) = 18.3 / x

x tan(30) = 18.3

x = 18.3 / tan(30)

I get 31.6965 and change
got 31.7 oh well guess it rounded.

8. Ermm.. ouch, my brain?

9. Originally Posted by getting2big
how did you get that?
with ease

jk man, i got it the same way as skippy

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