SOLUTION: if i have a vertical wall 20 ft tall and a pipe going up that wall, but the pipe cannot bend further than 30 degrees how many inches can i go before going past 30 degrees at the to

Question 627171: if i have a vertical wall 20 ft tall and a pipe going up that wall, but the pipe cannot bend further than 30 degrees how many inches can i go before going past 30 degrees at the top.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

I'm assuming that the pipe is flush against the wall all the way up but is 30 degrees off vertical side-to-side.

So you want the measure of the short side of a 30-60-90 right triangle where the long leg is 20 feet.

Using the long leg as a unit measure, the proportions of a 30-60-90 right triangle are

So for a 20 foot long leg, the short leg will measure

or a little over 11 and 1/2 feet or 138.6 inches. Also note that the pipe itself, which is the longest side of the triangle will measure exactly 2 times the measure of the short leg when the offset angle is exactly 30 degrees. Basically, you will need 23 feet of pipe to go up the 20 foot wall if you offset a full 30 degrees.

John

My calculator said it, I believe it, that settles it

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