In the angles and ???? of a triangular are in the arithmetic progression and if and denotes the lengths of the sides opposite to and ???? respectively, then the value of the expression is |
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a) |
b) |
c) |
d) |

In the angles and ???? of a triangular are in the arithmetic progression and if and denotes the lengths of the sides opposite to and ???? respectively, then the value of the expression is |
|||||||

a) |
b) |
c) |
d) |

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