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    Maths-
    General
    Easy

    Question

    cot space B equals 2 tan space left parenthesis A minus B right parenthesis not stretchy rightwards double arrow 2 tan space B plus cot space B equals

    1. tan A
    2. cot A
    3. 2tan A
    4. 2cot A

    The correct answer is: tan A

      table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell fraction numerator cot space straight B over denominator 2 end fraction minus fraction numerator tan space straight A minus tan space straight B over denominator 1 plus tan space Atan space straight B end fraction end cell row cell not stretchy rightwards double arrow cot space straight B plus tan space straight A equals 2 tan space straight A minus 2 tan space straight B end cell row cell not stretchy rightwards double arrow 2 tan space straight B plus cot space straight B equals tan space straight A end cell end table

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