# Trigonometry - i am not a math whiz

**URL:** <https://forum.kirupa.com/t/trigonometry-i-am-not-a-math-whiz/268873>\
**Category:** Uncategorized\
**Created:** [August 19, 2008, 9:42pm UTC](https://forum.kirupa.com/t/trigonometry-i-am-not-a-math-whiz/268873 "2008-08-19T21:42:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![el\_bob](https://avatars.discourse-cdn.com/v4/letter/e/898d66/32.png) [@el\_bob](https://forum.kirupa.com/u/el_bob)\
**Post date:** [August 19, 2008, 9:42pm UTC](https://forum.kirupa.com/t/trigonometry-i-am-not-a-math-whiz/268873/1 "2008-08-19T21:42:19Z")

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i know the pythagorean theorem for figuring out distance between 2 points.

what i don’t know is how to take that equation and determine another aspect based on 2 different bits of data.

can anybody with good math skills help me with the equation to figure out the ending \_y position based on the starting point, the initial angle and the ending \_x position??