Скачать или смотреть L2 - Trigonometric ratios - Trigonometry

The trigonometric ratios of some special angles can be found out using simple geometry.

Check out this simple video that utilizes relationships between angles and sides of a right triangle. You should be able to attempt your textbook exercises once you go through this lesson.

For more information, visit mathasaur.com

In this lesson:
00:41 - Trigonometric ratios for θ = 0°
02:55 - Trigonometric ratios for θ = 90°
04:02 - Trigonometric ratios for θ = 45°
05:08 - Trigonometric ratios for θ = 30° and 60°
08:27 - How to remember the trigonometric table for specific angles?
09:33 - Evaluate a trigonometric expression
10:17 - Find lengths of sides of a right angled triangle using trigonometry
11:42 - Solve a pair of trigonometric equations in two variables

Lessons on Trigonometry:
L1 - Introduction -    • L1 - Introduction - Trigonometry  
L2 - Trigonometric ratios -    • L2 - Trigonometric ratios - Trigonometry  
L3 - Complementary angles -    • L3 - Complementary angles - Trigonometry (...  
L4 - Identities -    • L4 - Identities - Trigonometry  
L5 - Applications -    • L5 - Applications - Trigonometry  

Other lessons by Mathasaur:
Arithmetic Progression -    • Arithmetic Progression  
Circles -    • Circles  
Coordinate Geometry -    • Coordinate Geometry  
Linear equations in two variables -    • Linear Equations in two variables  
Polynomials -    • Polynomials  
Probability -    • Probability  
Quadratic Equations -    • Quadratic Equations  
Real Numbers -    • Real Numbers  
Surface Areas and Volume -    • Surface Areas and Volume  
Triangles -    • Triangles  
Trigonometry -    • Trigonometry  
Short videos (English) -    • Shorts - English  

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Questions have been picked/inspired from class 10 NCERT textbook.