https://www.khanacademy.org/math/class-9-bridge-course-mh/x31106d01a69095e7:right-triangles/x31106d01a69095e7:basics-of-trigonometric-ratios/v/intro-to-the-trigonometric-ratios-indian-accent 2025-06-09T10:42:13.693429425Z Intro to the trigonometric ratios Sin, cos, and tan are trigonometric ratios that relate the angles and sides of right triangles. Sin is the ratio of the opposite side to the hypotenuse, cos is the ratio of the adjacent side to the hypotenuse, and tan is the ratio of the opposite side to the adjacent side. They are often written as sin(x), cos(x), and tan(x), where x is an angle in radians or degrees. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Intro to the trigonometric ratios Sin, cos, and tan are trigonometric ratios that relate the angles and sides of right triangles. Sin is the ratio of the opposite side to the hypotenuse, cos is the ratio of the adjacent side to the hypotenuse, and tan is the ratio of the opposite side to the adjacent side. They are often written as sin(x), cos(x), and tan(x), where x is an angle in radians or degrees. https://cdn.kastatic.org/ka-youtube-converted/JfMNy-2kxbc.mp4/JfMNy-2kxbc.mp4 557 Trigonometric ratios https://www.khanacademy.org/math/revision-term-1-ncert-math-class-10/x2f82315bf1a14434:week-2/x2f82315bf1a14434:introduction-to-trigonometry/v/trigonometric-ratios-in-right-triangles-indian-accent 2025-06-09T10:42:13.693429425Z Trigonometric ratios in right triangles This video shows a few examples where he starts with the two legs of a right triangle and he finds the trig ratios of one of the acute angles. Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Trigonometric ratios in right triangles This video shows a few examples where he starts with the two legs of a right triangle and he finds the trig ratios of one of the acute angles. https://cdn.kastatic.org/ka-youtube-converted/goQkPbfy0uo.mp4/goQkPbfy0uo.mp4 732 Trigonometric ratios https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-trig-ratios-intro/e/trigonometry_1 2026-04-01T11:24:50.133517701Z Trigonometric ratios in right triangles Given the side lengths of a right triangle, find the sine, cosine, or tangent of one of the acute angles. Tomer Gal exercise https://www.khanacademy.org/math/revision-term-1-ncert-math-class-10/x2f82315bf1a14434:week-2/x2f82315bf1a14434:introduction-to-trigonometry/v/finding-reciprocal-trig-ratios-indian-accent 2025-07-25T08:13:50.602067006Z Finding reciprocal trig ratios We find all six trigonometric ratios (sine, cosine, tangent, secant, cosecant, and cotangent) of an angle in a given right triangle. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Finding reciprocal trig ratios We find all six trigonometric ratios (sine, cosine, tangent, secant, cosecant, and cotangent) of an angle in a given right triangle. https://cdn.kastatic.org/ka-youtube-converted/rB6me2-OBeA.mp4/rB6me2-OBeA.mp4 290 Trigonometric ratios https://www.khanacademy.org/math/10-mr-foundation/x09747e87495927f2:geometry/x09747e87495927f2:into-to-trigonometric-ratios/e/finding-trigonometric-ratios 2026-04-08T01:15:04.085520103Z Find trigonometric ratios using the Pythagorean theorem How to find sec of an angle when sin is given? Or any other trigonometric ratio? Let's practice some problems that test this skill. ashish exercise https://www.khanacademy.org/math/class-9-geometry-od/x0a98afb01410c41a:trigonometry/x0a98afb01410c41a:reciprocal-trigonometric-ratios/e/evaluating-expressions-involving-trigonometric-ratios-of-an-angle-when-one-ratio-is-given 2026-04-08T01:15:04.085520103Z Evaluating expressions involving trigonometric ratios of an angle when one ratio is given How to find sec of an angle when sin is given? Or any other trigonometric ratio? Let's practice some problems that test this skill. ashish exercise