CBSE Class 10 Answered
Can we do this like as follows
cot2cot12cot22cot32cot42cot45cot48cot58cot68cot78cot88
=(cot2cot88)(cot12cot78)(cot22cot68)(cot32cot58)(cot42cot48)cot45
=(cot2Tan2)(cot12Tan12)(cot22tan22)(cot32tan32)(cot42tan42)cot45
=(1)(1)(1)(1)(1)cot45
=1 x 1
=1
Asked by RAHUL rd | 10 Sep, 2014, 02:21: PM
Expert Answer
Answered by Vimala Ramamurthy | 10 Sep, 2014, 03:41: PM
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