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 ...

Birds can do trigonometry. That's just one of many theorems in "The Math Instinct: Why You're a Mathematical Genius (Along With Lobsters, Birds, Cats and Dogs)" by Keith Devlin, 58. That unwieldy ...

Trigonometry is about triangles and about love. It’s about people trying to find their way through a very turbulent time - trying and get into yourself a bit more, let go of family traits and finding ...