This basic trigonometry video tutorial provides an introduction into trigonometric ratios as it relates to a course in geometry. It explains how to calculate the sin, cos, and tan ratio of a right triangle given the 3 sides. You can use the pythagorean theorem to find the value of the missing side. In addition, it explains how to evaluate trigonometric functions using right triangle trigonometry and special right triangles such as the 30 60 90 triangle or the 45 45 90 triangle. This video contains plenty of examples and practice problems including find missing angles as well as missing sides. Polygons: https://www.youtube.com/watch?v=E_-3ulbtcLk Quadrilaterals: https://www.youtube.com/watch?v=ogcH3eM5beM Points, Lines, Planes, & Segments: https://www.youtube.com/watch?v=dDWjhRfBsKM Similar Triangles: https://www.youtube.com/watch?v=YiFwvAFk-xs Pythagorean Theorem: https://www.youtube.com/watch?v=d8EA5TxGzcY _________________________________ The Distance Formula: https://www.youtube.com/watch?v=YDvUy5VYm9E Distance Between 2 Points - 3D: https://www.youtube.com/watch?v=0c6cP2zLC2c Special Right Triangles - 30 60 90: https://www.youtube.com/watch?v=p70UBGCHZrQ Special Right Triangles - 45 45 90: https://www.youtube.com/watch?v=xzMirNSv1d0 _________________________________ Angle of Elevation Word Problems: https://www.youtube.com/watch?v=uyKvSe6Ltgs Finding The Missing Side of a triangle: https://www.youtube.com/watch?v=tielQ3ejh70 Finding The Missing Angle of a Triangle: https://www.youtube.com/watch?v=4Dv5IFqATrc Two Triangle Trigonometry Problems: https://www.youtube.com/watch?v=OTP885mApV8 How To Find The Area of a Rectangle: https://www.youtube.com/watch?v=M8JdRHeQBW8 ________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections