Wb JeeSequence And SeriesWB JEE 2010MCQ+1 / -0.252010If angles A, B and C are in A.P., then \({{a + c} \over b}\) is equal toA\(2\sin \left( {{{A - C} \over 2}} \right)\)B\(2\cos \left( {{{A - C} \over 2}} \right)\)C\(\cos \left( {{{A - C} \over 2}} \right)\)D\(\sin \left( {{{A - C} \over 2}} \right)\)Check AnswerClear SelectionReveal AnswerShow Explanation
