I didn’t have a protractor handy, unlike when I was in high school and carried one at all times. But then I realized it was a rare chance to apply some trigonometry.

Meanwhile trigonometry focuses on functions that depend on angles. These functions, such as the sine and cosine, are defined using right triangles.

In 2022, two high school students created a trigonometric proof of the Pythagorean Theorem—something that’s only ever been accomplished by a few professional mathematicians. Now, a new article ...

Revise calculating the area of a triangle using trigonometry for your National 5 maths exam with Bitesize Scotland interactive practice quizzes covering feedback and common errors.