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Last updated at May 29, 2018 by Teachoo
Transcript
Example 7 Show that tan-1 + tan-1 2 /(1 2) = tan-1 (3 3)/(1 3 2) Taking L.H.S tan-1 + tan-1 2 /(1 2) = tan-1 ( + 2 /(1 2))/(1 2 /(1 2)) = tan-1 ( + 2 /(1 2))/(1 2 ^2/(1 2)) = tan-1 (( (1 2) + 2 )/(1 2))/( (1 2) 2 ^2/(1 2)) = tan-1 (( 3 + 2 )/(1 2))/( 1 2 2 ^2/(1 2)) = tan-1 (( + 2 3)/(1 2))/( 1 2 2 ^2/(1 2)) = tan-1 ((3 3)/(1 2))/( 1 3 ^2/(1 2)) = tan-1 (3 3)/(1 2) (1 2)/ 1 3 ^2 = tan-1 (3 3)/ 1 3 ^2 = R.H.S Hence, L.H.S = R.H.S Hence proved
Examples
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Example 3 Important
Example 4
Example 5 Important
Example 6 Important Not in Syllabus - CBSE Exams 2021
Example 7 Not in Syllabus - CBSE Exams 2021 You are here
Example 8 Not in Syllabus - CBSE Exams 2021
Example 9 Important
Example 10 Important Not in Syllabus - CBSE Exams 2021
Example 11 Important Not in Syllabus - CBSE Exams 2021
Example 12 Important Not in Syllabus - CBSE Exams 2021
Example 13 Important Not in Syllabus - CBSE Exams 2021
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