cot2 A - cos2 A = cot2 A × cos2 A

Asked by akbarreshma123 | 24th 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  | 26th Oct, 2020, 09:41: AM