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Ex 3.2, 6 - Chapter 3 Class 11 Trigonometric Functions
Last updated at Dec. 8, 2016 by Teachoo
Transcript
E๐ฅ 3.2, 6 Find the value of the trigonometric function sin 765ยฐ sin 765ยฐ = sin (765 ร ๐/180) = sin (17๐/4) = sin (41/4 ๐) = sin (4๐ + 1/4 ๐) = sin (1/4 ๐) = sin (1/4 ร 180ยฐ) = sin 45ยฐ = 1/โ2
Finding Value of trignometric functions, given angle
Negative Angle Identities
Value of sin, cos, tan repeats after 2ฯ
Shifting angle by ฯ/2, ฯ, 3ฯ/2 , 2ฯ
Example 8
Ex 3.2, 9 Important
Ex 3.2, 8 Important
Ex 3.2, 10 Important
Example 9 Important
Ex 3.2, 6 You are here
Ex 3.2, 7 Important
Example 10
Ex 3.3, 1
Ex 3.3, 2 Important
Ex 3.3, 3 Important
Ex 3.3, 4
Ex 3.3, 8 Important
Ex 3.3, 9 Important
Find values of sin 18, cos 18, cos 36, sin 36, sin 54, cos 54 Important
Chapter 3 Class 11 Trigonometric Functions
Concept wise
- Radian measure - Conversion
- Arc length
- Finding Value of trignometric functions, given other functions
- Finding Value of trignometric functions, given angle
- (x + y) formula
- 2x 3x formula - Proving
- 2x 3x formula - Finding value
- cos x + cos y formula
- 2 sin x sin y formula
- Finding Principal solutions
- Finding General Solutions
- Sine and Cosine Formula
About the Author
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.