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The notable angles (30°, 45°, and 60°) are named as such due to their importance in Geometry, especially in Trigonometry and calculations involving trigonometric ratios (sine, cosine, and tangent). As already mentioned, notable angles are frequently applied in trigonometric calculations. How to calculate notable angles? How to memorize notable angles? Exercises on notable angles, notable angles 90°, notable angles 30° 45° 60°, notable angles sine, cosine, tangent, sine and cosine notable angles, notable angles table, notable angles circumference notable angles trigonometry Trigonometry in the right triangle In a right triangle, there are some important relationships. One of them is the Pythagorean Theorem, which states: "the sum of the squares of the legs is equal to the square of the hypotenuse". The trigonometric relationships in a right triangle have three cases: sine, cosine, and tangent. How to perform trigonometric relationships in a right triangle? How to identify trigonometric relationships? What are trigonometric ratios used for in a right triangle? How to do trigonometry in a right triangle? Trigonometry in Right Triangles According to the Pythagorean Theorem, the sum of the squares of the legs of a right triangle is equal to the square of its hypotenuse: ... Read as opposite leg over hypotenuse. Read as adjacent leg over hypotenuse. Read as opposite leg over adjacent leg. Trigonometric circle and trigonometric ratios. Trigonometric relations in right triangles: exercises Metric relations in right triangles Trigonometric relations in right triangles: 9th grade Trigonometric relations in right triangles: PDF Trigonometric relations in right triangles: exercises PDF Trigonometric relations in right triangles: mind map Trigonometric relations in right triangles: formulas Trigonometric relations in right triangles: sine, How to calculate sine, cosine, and tangent of 30, 45, and 60? Become a member of this channel and get benefits:    / @murakami.   Now on the Matemática Rapidola channel, you can become a channel member in the Basic Statistics and Applied Statistics teams.