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  5. Some Applications of Trigonometry

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

  • question_answer
    In a \[\Delta \] PQR, Sin \[\left( \frac{\mathbf{P+R}}{\mathbf{2}} \right)\] is equal to ??

    A)  \[-\,Cos\frac{Q}{2}\]                                                                

    B) \[\,Cos\frac{Q}{2}\]        

    C)  \[Sin\frac{Q}{2}\]                                                                    

    D) \[-\,Sin\frac{Q}{2}\]

    E) None of these

    Correct Answer: B

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