Ex 3.2, 7 - Chapter 3 Class 11 Trigonometric Functions
Last updated at May 29, 2018 by Teachoo
Transcript
E 3.2, 7 Find the value of the trigonometric function cosec ( 1410 ) cosec ( 1410 ) = cosec (1410 ) = cosec (1410 /180) = cosec (47 /6) = cosec (75/6 ) = cosec (8 1/6 ) = cosec ( 1/6 ) = cosec ( 1/6 180 ) = cosec ( 30 ) = ( cosec 30 ) = cosec 30 = 1/sin 30 = 1/(( 1/2 ) ) = 2/1 = 2
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
Example 9
Ex 3.2, 6
Ex 3.2, 7 Important You are here
Example 10
Ex 3.3, 1
Ex 3.3, 2
Ex 3.3, 3
Ex 3.3, 4 Important
Ex 3.3, 8 Important
Ex 3.3, 9
Find values of sin 18, cos 18, cos 36, sin 36, sin 54, cos 54
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
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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.