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  3. 10th Class
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  5. Some Applications of Trigonometry

10th Class Mathematics Some Applications of Trigonometry Question Bank Trigonometry and Its Application

  • question_answer
    If\[m=k\,Sin\phi \,\,\text{Cos}\theta ,\] \[n=k\,\text{Sin}\,\phi \,\,Sin\theta \] and \[r=k\,\text{Cos}\,\phi \] then \[{{m}^{2}}+{{n}^{2}}+{{r}^{2}}=\]______

    A)  1                                                                    

    B)  2            

    C)  \[{{k}^{2}}\]         

    D) \[\frac{1}{{{k}^{2}}}\]

    E) None of these

    Correct Answer: C

    Solution :

    Not Available                                                  


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