JEE Main & Advanced Mathematics Trigonometric Identities Question Bank Fundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles

  • question_answer
    If \[\text{cosec }A+\cot A=\frac{11}{2},\] then \[\tan A=\] [Roorkee 1995]

    A) \[\frac{21}{22}\]

    B) \[\frac{15}{16}\]

    C) \[\frac{44}{117}\]

    D) \[\frac{117}{43}\]

    Correct Answer: C

    Solution :

    \[\text{cosec}\,A+\cot A=\frac{11}{2}\Rightarrow \text{cosec}\,A-\cot A=\frac{2}{11}\] Therefore\[2\cot A=\frac{117}{22}\Rightarrow \tan A=\frac{44}{117}\].


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