Love Triangle review: Matt Parker’s comic look at trigonometry is a bit heavy on the maths

Love Triangle
Matt Parker (Allen Lane)

Writing a popular science book that lures readers into often dense and difficult subjects isn’t a task for the faint-hearted. And Matt Parker, the best-selling author of Humble Pi and Things to Make and Do in the Fourth Dimension, should know all about that. He is, after all, one of an elite few who make it look effortless. Imagine my surprise, then, at finding his latest book, Love Triangle: The life-changing magic of trigonometry…