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Problem #1
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Problem #2
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Problem #3
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Problem #4
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Problem #5
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Google is your best friend...

I assume you've done basic trig before?
THE REST are all done the same.

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Feet and inches... for fuck sake America. Why do you still use such a shit system?

Fuck trigonometry.

For number 3, sin28=X/7.5
=> 7.5sin28=x

y can be got by a^2+b^2=c^2
=> (7.5sin2^2+(5.4)^2=y^2



Number 4:
ill call the point at the base of the flag pole F
Distance from A to F=

tan60=120/AF
AF=120/tan60

BF=

tan35=120/BF
BF=120/tan35

then just BF-AF=answer..

9+10=21