Class 11 Maths · Chapter 3 · CBSE / NCERT
Trigonometric Functions
Trigonometry beyond the triangle. You’ll learn radian measure, sine and cosine for any angle, their graphs, and the sum and double-angle formulas.
14 short lessons · about 68 minutes in all
What you’ll learn
- 1Angles that keep turning4 min
- 2The radian: measuring a turn by its arc5 min
- 3Switching between degrees and radians4 min
- 4Sine and cosine on the unit circle5 min
- 5The other four: tan, cot, sec and cosec5 min
- 6Signs in the four quadrants, and minus x5 min
- 7Which angles work, and which answers appear5 min
- 8Repeating waves and big angles5 min
- 9Finding all six from just one5 min
- 10Cosine of a sum and a difference5 min
- 11Sine of a sum, and shortcuts with 1805 min
- 12Tangent of a sum and a difference5 min
- 13Doubling, tripling and halving an angle5 min
- 14Turning sums into products, and back5 min
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Angles that keep turning · about 4 minutes
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More Class 11 Maths
The other 13 chapters.
CH 1Sets14 lessonsCH 2Relations and Functions14 lessonsCH 4Complex Numbers and Quadratic Equations13 lessonsCH 5Linear Inequalities13 lessonsCH 6Permutations and Combinations14 lessonsCH 7Binomial Theorem13 lessonsCH 8Sequences and Series14 lessonsCH 9Straight Lines14 lessonsCH 10Conic Sections14 lessonsCH 11Introduction to Three Dimensional Geometry13 lessonsCH 12Limits and Derivatives14 lessonsCH 13Statistics14 lessonsCH 14Probability13 lessons
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