Class 10 Maths · Chapter 8 · CBSE / NCERT
Introduction to Trigonometry
Trigonometric ratios of a right triangle. You’ll learn sin, cos, tan and their reciprocals, their values at 0°, 30°, 45°, 60° and 90°, and how to prove trigonometric identities.
9 short lessons · about 38 minutes in all
What you’ll learn
- 1Naming the Sides of a Right Triangle3 min
- 2The Six Trigonometric Ratios4 min
- 3Flipping Ratios: Cosecant, Secant and Cotangent4 min
- 4Same Angle, Same Ratio, Any Size Triangle4 min
- 5Finding All the Ratios from Just One4 min
- 6The Ratios at 0, 30, 45, 60 and 90 Degrees5 min
- 7Sine, Cos and Pythagoras: The Trigonometric Identities5 min
- 8Proving an Identity Is True for Every Angle5 min
- 9Solving a Right Triangle with the Right Ratio4 min
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Naming the Sides of a Right Triangle · about 3 minutes
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More Class 10 Maths
The other 13 chapters.
CH 1Real Numbers8 lessonsCH 2Polynomials8 lessonsCH 3Pair of Linear Equations in Two Variables8 lessonsCH 4Quadratic Equations8 lessonsCH 5Arithmetic Progressions9 lessonsCH 6Triangles9 lessonsCH 7Coordinate Geometry9 lessonsCH 9Some Applications of Trigonometry9 lessonsCH 10Circles6 lessonsCH 11Areas Related to Circles5 lessonsCH 12Surface Areas and Volumes3 lessonsCH 13Statistics6 lessonsCH 14Probability6 lessons
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