10th Class Mathematics Introduction to Trigonometry Question Bank Introduction to Trigonometry

  • question_answer
    Which among the following is not similar?
    \[\mathbf{sin 60{}^\circ , 2 sin 30{}^\circ }\mathbf{.cos 30{}^\circ }\]\[\frac{\mathbf{2tan 30{}^\circ }}{\mathbf{1+ta}{{\mathbf{n}}^{\mathbf{2}}}\mathbf{30{}^\circ }}\mathbf{,}\frac{\sqrt{\mathbf{3}}}{\mathbf{2}}\]

    A) \[sin\text{ }60{}^\circ ~\]                                                       

    B) \[2\text{ }sin\text{ }30{}^\circ .cos\text{ }30{}^\circ ~\]

    C)  \[\frac{2tan 30{}^\circ }{1+ta{{n}^{2}}30{}^\circ }\]                       

    D)  \[\frac{\sqrt{3}}{2}\]

    E) None of these

    Correct Answer: C


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