Reply by jonah

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Posted on Help Calculating a compound angle

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2079 posts in 3806 days

#1 posted 01-10-2019 04:24 PM

If I’m remembering my trigonometry, you’d need to find the inverse tangent (arctan) of the bottom angle. I can’t read your writing in the front view there, but based on the side view, you’d have a right triangle with the bottom side being 5.25” and the opposite side being 24”. Based on that geometry, the angle there is 77.66 degrees.

If the front view of the top box is 16.5” (I can’t tell for sure), then the geometry there is an adjacent side of 8 inches, an opposite side of 24”, and thus an angle of 71.57 degrees.

I used this calculator, FYI.

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