https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-trig-ratios-intro/v/similarity-to-define-sine-cosine-and-tangent 2021-06-30T17:32:38Z Triangle similarity & the trigonometric ratios Sal explains how the trigonometric ratios are derived from triangle similarity considerations. Sal Khan video https://cdn.kastatic.org/googleusercontent/J9lnSKMAAwcdbUhOC5YT3pprGnuQROHxnqLGq_xtObAWFo8DrHqrLKaZWUOk_YJcyba1ytEJ-krfQjKw14IOdV48 Triangle similarity & the trigonometric ratios Sal explains how the trigonometric ratios are derived from triangle similarity considerations. https://cdn.kastatic.org/ka-youtube-converted/QuZMXVJNLCo.mp4/QuZMXVJNLCo.mp4 536 Razones trigonométricas https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-trig-ratios-intro/v/basic-trigonometry-ii 2021-06-30T17:32:36Z Trigonometric ratios in right triangles Sal 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. Sal Khan video https://cdn.kastatic.org/googleusercontent/cwpGy84NzSmhKdw05CgXGtrk00QP2OcirhTztXczYdrISg6awjAEHFhgQLuF8VUYPmXsM-LOJBMBVSmZ3yP555zf Trigonometric ratios in right triangles Sal 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/G-T_6hCdMQc.mp4/G-T_6hCdMQc.mp4 731 Razones trigonométricas https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-trig-ratios-intro/a/finding-trig-ratios-in-right-triangles 2022-09-10T02:03:40.164764806Z Trigonometric ratios in right triangles Learn how to find the sine, cosine, and tangent of angles in right triangles. article 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/geometry/hs-geo-trig/hs-geo-solve-for-a-side/v/example-trig-to-solve-the-sides-and-angles-of-a-right-triangle 2021-06-30T17:32:38Z Solving for a side in right triangles with trigonometry Sal is given a right triangle with an acute angle of 65° and a leg of 5 units, and he uses trigonometry to find the two missing sides. Sal Khan video https://cdn.kastatic.org/googleusercontent/X0ECxxkRbmZu7H78vm4EbH8BRKYqPBGlzkuAdFqDsmG5d33yLEW3qY54S02C0-YF6OUMI-SPnXfHJYAyuzICHfCYJQ Solving for a side in right triangles with trigonometry Sal is given a right triangle with an acute angle of 65° and a leg of 5 units, and he uses trigonometry to find the two missing sides. https://cdn.kastatic.org/ka-youtube-converted/l5VbdqRjTXc.mp4/l5VbdqRjTXc.mp4 424 Razones trigonométricas https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-solve-for-a-side/a/unknown-side-in-right-triangle-w-trig 2025-02-11T16:42:34.189704851Z Solving for a side in right triangles with trigonometry Learn how to use trig functions to find an unknown side length in a right triangle. article https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-solve-for-a-side/e/trigonometry_2 2025-03-09T12:38:48.303569754Z Solve for a side in right triangles Given one side length and an acute angle in a right triangle, find another side using trigonometry. Tomer Gal exercise