Cot A - tan A=
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heya!!!
cotA-tanA
=)cosA/sinA-sinA/cosA.
=)cos^2A-sin^2A/cosA*sinA
...
=)cos2A/cosA*sinA
【dicidividing by 2 in denominator and multiplying by 2 in numerator 】 then we found 2sinA*cosA and 2sinA*cosA=cos2A
=)2sin2A/cos2A
=)2tan2A Ans..
hope it help you.
@rajukumar1☺
cotA-tanA
=)cosA/sinA-sinA/cosA.
=)cos^2A-sin^2A/cosA*sinA
...
=)cos2A/cosA*sinA
【dicidividing by 2 in denominator and multiplying by 2 in numerator 】 then we found 2sinA*cosA and 2sinA*cosA=cos2A
=)2sin2A/cos2A
=)2tan2A Ans..
hope it help you.
@rajukumar1☺
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