Can you find the length of a missing side of a right triangle? You most likely can: if you are given two side lengths you can use the Pythagorean Theorem to find the third one. But, what if you are only …

Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.

Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.

There are many real-world applications of right triangle trigonometry. For example, we can use the trigonometric ratios to solve problems involving height and distance, such as determining the height …

Practicing finding right triangle side lengths with the Pythagorean theorem, rewriting square root expressions, and visualizing right triangles in context helps us get ready to learn about right triangles …

Practice Trigonometric ratios in right triangles Get 3 of 4 questions to level up!

Right triangle trigonometry problems are all about understanding the relationship between side lengths, angle measures, and trigonometric ratios in right triangles.

Learn shortcut ratios for the side lengths of two common right triangles: 45°-45°-90° and 30°-60°-90° triangles. The ratios come straight from the Pythagorean theorem.

Relate angles and side lengths using side length ratios in similar right triangles.

We can use right triangles to model real-world situations. For example, we might use a right triangle to figure out the height of a building or the distance across a river.