JEE Main & Advanced Mathematics Trigonometric Equations Question Bank Relation between sides and angles, Solutions of triangles

  • question_answer
    In \[\Delta ABC,\] \[\text{cosec }A(\sin B\cos C+\cos B\sin C)=\] [MP PET 1986, 1995; Pb. CET 1990, 94]

    A) \[c/a\]

    B) \[a/c\]

    C) 1

    D) \[c/ab\]

    Correct Answer: C

    Solution :

    \[\left( \frac{b}{a}\cos C+\frac{c}{a}\cos B \right)=\]1;   (by projection rule).


You need to login to perform this action.
You will be redirected in 3 sec spinner