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  3. 10th Class
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  5. Introduction to Trigonometry

10th Class Mathematics Introduction to Trigonometry Question Bank Case Based (MCQs) - Introduction to Trigonometry

  • question_answer
    The value of \[\frac{{{\tan }^{2}}45{}^\circ -1}{{{\tan }^{2}}45{}^\circ +1}\]is:

    A) \[0\]

    B) \[1\]

    C) \[2\]

    D) \[-1\]

    Correct Answer: D

    Solution :

    \[\frac{{{\tan }^{2}}45{}^\circ -1}{{{\tan }^{2}}45{}^\circ +1}=\frac{{{(1)}^{2}}-1}{{{1}^{2}}+1}=\frac{0}{2}=0\]
    So, option [a] is correct.


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