https://www.khanacademy.org/math/revision-term-1-od-math-class-10/x03e14a980a7a91ad:week-2/x03e14a980a7a91ad:trigonometry/v/special-right-triangles-intro-part-1-indian-accent 2025-06-04T10:04:13.13703146Z Special right triangles intro (part 1) A 45-45-90 triangle is a special type of right triangle, where the ratio of the lengths of the sides of a 45-45-90 triangle is always 1:1:√2, meaning that if one leg is x units long, then the other leg is also x units long, and the hypotenuse is x√2 units long. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Special right triangles intro (part 1) A 45-45-90 triangle is a special type of right triangle, where the ratio of the lengths of the sides of a 45-45-90 triangle is always 1:1:√2, meaning that if one leg is x units long, then the other leg is also x units long, and the hypotenuse is x√2 units long. https://cdn.kastatic.org/ka-youtube-converted/bdGkm3773uI.mp4/bdGkm3773uI.mp4 581 Trigonometric ratios of some specific angles https://www.khanacademy.org/math/revision-term-1-od-math-class-10/x03e14a980a7a91ad:week-2/x03e14a980a7a91ad:trigonometry/v/special-right-triangles-intro-part-2-indian-accent 2025-06-04T10:04:13.13703146Z Special right triangles intro (part 2) 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. Alternatively, the ratio of the sides is 1 : √3 : 2. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Special right triangles intro (part 2) 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. Alternatively, the ratio of the sides is 1 : √3 : 2. https://cdn.kastatic.org/ka-youtube-converted/dNm2L4j5xq8.mp4/dNm2L4j5xq8.mp4 565 Trigonometric ratios of some specific angles https://www.khanacademy.org/math/revision-term-1-od-math-class-10/x03e14a980a7a91ad:week-2/x03e14a980a7a91ad:trigonometry/e/trigonometric-ratios-of-special-angles 2025-12-30T07:05:15.972746521Z Trigonometric ratios of special angles Let's practice recalling the values of trigonometric ratios of some special angles. ashish exercise https://www.khanacademy.org/math/revision-term-1-od-math-class-10/x03e14a980a7a91ad:week-2/x03e14a980a7a91ad:trigonometry/v/30-60-90-triangle-example-problem-indian-accent 2025-06-04T10:04:13.13703146Z 30-60-90 triangle example problem Using what we know about 30-60-90 triangles to solve what at first seems to be a challenging problem Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw 30-60-90 triangle example problem Using what we know about 30-60-90 triangles to solve what at first seems to be a challenging problem https://cdn.kastatic.org/ka-youtube-converted/dWsdnYvZlyw.mp4/dWsdnYvZlyw.mp4 401 Trigonometric ratios of some specific angles https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-special-right-triangles/e/pythagorean_theorem_2 2025-12-30T07:05:15.972746521Z Special right triangles Use the Pythagorean theorem to discover patterns in 30°-60°-90° and 45°-45°-90° triangles. Ben Alpert exercise https://www.khanacademy.org/math/revision-term-1-od-math-class-10/x03e14a980a7a91ad:week-2/x03e14a980a7a91ad:trigonometry/e/evaluating-expressions-of-trigonometric-ratios-for-some-special-angles 2026-03-07T07:20:41.87360937Z Evaluating expressions of trigonometric ratios for some special angles Let's evaluate expressions of trigonometric ratios for some special angles. ashish exercise