Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have 5 lines (d1 -> d5) equally distributed from each other in 3d perspective, and I have the values of angle (a), (d1) and (b5). I need to calculate (b2, b3, b4, d2, d3, d4, d5).

enter image description here

I can calculate d5 with:

d5 = d1 - ( b5 * Math.tan(a))

but I have no idea how to calculate b2, b3 and b4. (d1 is divided into 4 identical segments.) Any help would be appreciated.

share|cite|improve this question
Welcome to math.SE, razzak! I've taken the liberty of fixing some of your spelling. – Paul VanKoughnett Mar 8 '13 at 2:05
@Paul VanKoughnett: thanks – razzak Mar 8 '13 at 2:07

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.