Mathematician Eugenia Cheng explores the uses of math beyond the classroom. Read more columns here. I recently needed to measure the angle of my computer keyboard, because I currently have it propped ...

You’re standing at the edge of a cliff, phone in hand, trying to measure the distance to the opposite side – no tape measure, no drone, just your brain. Now what? Trigonometry just became your ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

Find an unknown side using \(\frac{𝑎}{sin𝐴} \) = \(\frac{𝑏}{sin𝐵} \) = \(\frac{𝑐}{sin𝐶 } \) Find an unknown angle using \(\frac{sin𝐴}{𝑎 ...