Trigonometric Ratio of table & Related ObservationsBy CREATA CLASSES / April 17, 2022 Back to: TRIGONOMETRY 1 USING ANIMATION & VISUAL TOOLS Previous Lesson Trigonometric Ratios of 0 & 90 Degree Lesson 4 within section TRIGONOMETRIC RATIOS & FUNCTIONS. You must enroll in this course to access course content. Next Lesson Trigonometric Functions Lesson 6 within section TRIGONOMETRIC RATIOS & FUNCTIONS. You must enroll in this course to access course content.