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ICSE Class 10 Answered

cot2 A - cos2 A = cot2 A × cos2 A
Asked by akbarreshma123 | 24 Oct, 2020, 08:35: PM
Expert Answer
Please check the steps below.
LHS
cot2A - cos2A
fraction numerator cos squared straight A over denominator sin squared straight A end fraction space minus space cos squared straight A
fraction numerator cos squared straight A space left parenthesis 1 space minus space sin squared straight A right parenthesis over denominator sin squared straight A end fraction
cos squared straight A fraction numerator left parenthesis 1 space minus space sin squared straight A right parenthesis over denominator sin squared straight A end fraction
cos squared straight A fraction numerator cos squared straight A over denominator sin squared straight A end fraction
cos squared straight A. cot squared straight A
 
This gives RHS.
Answered by | 26 Oct, 2020, 09:41: AM
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