
Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Examples
Example 2
Example 3 (i) Important
Example 3 (ii) You are here
Example 4 Important
Example 5 Important
Example 6 Important
Question 1 Deleted for CBSE Board 2024 Exams
Question 2 Deleted for CBSE Board 2024 Exams
Question 3 Deleted for CBSE Board 2024 Exams
Question 4 Important Deleted for CBSE Board 2024 Exams
Question 5 Important Deleted for CBSE Board 2024 Exams
Question 6 Important Deleted for CBSE Board 2024 Exams
Question 7 Important Deleted for CBSE Board 2024 Exams
Last updated at June 6, 2023 by Teachoo
Example 3 Show that (ii) sinโ1 (2xโ(1โ๐ฅ2)) = 2 cosโ1x Solving L.H.S. sinโ1 ( 2x โ(1โ๐ฅ2) ) Putting x = cos ฮธ = sinโ1 ("2 cos ฮธ " โ(๐โ๐๐๐๐" ฮธ" )) = sinโ1 ("2 cos ฮธ " โ(๐๐๐๐" ฮธ" )) = sinโ1 (2 cos ฮธ sin ฮธ) = sinโ1 (sin 2ฮธ) We need to make 2x โ(๐โ๐๐) in terms of sin When we get โ(1โ๐ฅ2) , we put x = cos ฮธ or sin ฮธ