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10th Class Mathematics Sample Paper Mathematics Sample Paper-3

  • question_answer
    If \[\sin \theta =\frac{a}{b}\], then \[\cos \theta \]is equal to

    A) \[\frac{a}{b}\]              

    B) \[\frac{b}{\sqrt{{{b}^{2}}-{{a}^{2}}}}\]

    C) \[\frac{a}{\sqrt{{{b}^{2}}-{{a}^{2}}}}\]       

    D) \[\frac{\sqrt{{{b}^{2}}-{{a}^{2}}}}{b}\]

    E) None of these

    Correct Answer: D

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