1. ## Trigonometry problem

Hi, I'm a carpenter and have encountered a problem. I want to make a conical tube consisting of 6 pieces. I want the angle between the pieces to be 15 degrees. The length of the tube is 500mm and the diameter is 400mm at one end. Is this possible? what diameter is is the other end?
many thanks
/Josef

2. ## Re: Trigonometry problem

Originally Posted by Ojeskate
Hi, I'm a carpenter and have encountered a problem. I want to make a conical tube consisting of 6 pieces. I want the angle between the pieces to be 15 degrees. The length of the tube is 500mm and the diameter is 400mm at one end. Is this possible? what diameter is is the other end?
many thanks
/Josef
You drew 8 pieces, not 6. And the angle that you drew as 15 degrees must be 360/8=45 degrees.

Since it is not a circle, it has no "diameter". Do you mean the distance from center of an edge to center of an edge or from vertex to vertex of the octagonal cross-section?

The "diameter" of each end is based on the edge length of the end. You just need to taper the width between the ends.