Example 16 - Chapter 3 Class 11 Trigonometric Functions
Last updated at May 29, 2018 by Teachoo
Transcript
Example 16 Prove that 7 + 5 / 7 5 = cot x Taking L.H.S. 7 + 5 / 7 5 We solve cos 7x + cos 5x & sin 7x sin 5x seperately Now 7 + 5 / 7 5 = (2 6x )/(2 6 si ) = x /sin x = cot x = R.H.S. Hence L.H.S. = R.H.S. Hence proved
Examples
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Example 16 You are here
Example 17
Example 18
Example 19
Example 20
Example 21
Example 22
Example 23
Example 24 Important
Example 25
Example 26
Example 27 Important
Example 28 Important
Example 29
Chapter 3 Class 11 Trigonometric Functions
Serial order wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.