Learn about the properties and applications of right triangles and trigonometry with Khan Academy's comprehensive unit.

Review of special right triangles, including properties and problem-solving techniques.

Learn about different types of triangles including scalene, isosceles, equilateral, acute, right, and obtuse on Khan Academy.

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A 30-60-90 triangle is a special right triangle with angles of 30, 60, and 90 degrees. It has properties similar to the 45-45-90 triangle. The side opposite the 30-degree angle is half the length of the hypotenuse, and the side opposite the 60-degree angle is the length of the short leg times the square root of three.

Bez maksas apgūsti matemātiku, mākslu, programmēšanu, ekonomiku, fiziku, ķīmiju, bioloģiju, medicīnu, finanses, vēsturi un daudz ko citu. Kāna akadēmija ir bezpeļņas organizācija, kuras misija ir nodrošināt bezmaksas pasaules līmeņa izglītību ikvienam, jebkur.

Lesson 6: Solving for an angle in a right triangle using the trigonometric ratios

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Given two sides in a right triangle, find one of the acute angles using trigonometry.