GUIDES & BLOG
Right triangle guides & blog
Practical guides and articles with clear explanations, useful examples, and formulas you can check.
How to find the hypotenuse
Find the hypotenuse of a right triangle from two legs or one side and an angle. Learn the formulas with step-by-step examples.
4 min readGUIDE 02How to find a missing right triangle angle
Find a missing right triangle angle with inverse sine, cosine, or tangent. Includes a 3–4–5 example and degree-to-radian explanation.
4 min readGUIDE 03SOH CAH TOA, explained visually
Learn SOH CAH TOA: sine, cosine, and tangent with opposite, adjacent, and hypotenuse labels, rearranged formulas, and a worked example.
5 min readGUIDE 0430–60–90 and 45–45–90 triangles
Use 30–60–90 and 45–45–90 triangle formulas and exact side ratios. Compare worked examples, radicals, and Pythagorean triples.
4 min readGUIDE 05Right triangles in practical measurements
Calculate rectangle diagonals, rise-and-run slope angles, and sloping lengths with right triangle formulas, consistent units, and worked examples.
5 min readGUIDE 06How to find a missing side of a right triangle
Find a missing leg or hypotenuse using Pythagoras or an acute angle. Includes worked examples, formulas, and common mistakes.
4 min read