10th Class Mathematics Solved Paper - Mathematics 2017 Outside Delhi Set-I

  • question_answer If the angle between two tangents drawn from an external point P to a circle of radius a and centre O, is \[60{}^\circ \], then find the length of OP.

    Answer:

    Given,   \[\angle APB=60{}^\circ \]
    \[\Rightarrow \] \[\angle APO=30{}^\circ \]
    In right angle\[\Delta \text{ O}AP\],
                            \[\frac{OP}{OA}=\cos ec\,\,30{}^\circ \]
                            \[\frac{OP}{a}=2\Rightarrow OP=2a\]


adversite


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

Free
Videos