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January 28, 2015

January 28, 2015

Posted by **wenjelin** on Tuesday, February 15, 2011 at 12:14am.

- trig -
**Reiny**, Tuesday, February 15, 2011 at 12:24amdid you make a diagram ?

let the top of the monument be A and the bottom be B

let the person's position be at P

Draw a horizontal from P to AB to meet AB at C.

then CB = 9

angle APC = 6°' 50' or 6.8333°

angle BPC = 7° 30' or 7.5°

Using triangle PBC you can find PC using tan7.5°

Once you have PC you can go into the other triangle and again using the tangent ratio find AC

Height of monument = AC + 9

- trig -
**Anonymous**, Sunday, August 12, 2012 at 8:46pm13

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