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ICSE Class 9 Answered

2tan11°tan31°tan45°tan59°tan79°
Asked by jayaraja2399 | 08 Feb, 2018, 09:36: PM
Expert Answer
begin mathsize 16px style 2 tan space 11 degree space tan space 31 degree space tan space 45 degree space tan space 59 degree space tan space 79 degree equals 2 tan space 11 degree space tan space 31 degree space tan space 45 degree space tan space left parenthesis 90 degree minus 31 degree right parenthesis space tan space left parenthesis 90 degree minus 11 degree right parenthesis equals 2 tan space 11 degree space tan space 31 degree space left parenthesis 1 right parenthesis space cot space 31 degree space cot space 11 degree equals 2 cross times 1 cross times 1 equals 2 end style
Answered by Rashmi Khot | 09 Feb, 2018, 09:32: AM

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