Trigonometry can be used to find the length of a side in a triangle. Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing side in a right-angled ...

Indeed, if there is one thing that someone might remember from grade school mathematics, it’s the fact that “the square of the hypotenuse of a right triangle is equal to the sum of the squares ...

Explore what makes a shape a triangle, a rectangle, or a square.

But the principle is a mainstay of math class and enables the calculation of the length of any side of a right-angled triangle — as long as the lengths of the other two sides are known. It’s usually ...