a) \(2\sin {30^0} + 3\cos {45^0} - \sin {60^0}\)\( = 2.\dfrac{1}{2} + 3.\dfrac{{\sqrt 2 }}{2} - \dfrac{{\sqrt 3 }}{2}\)\( = 1 + \dfrac{{3\sqrt 2 - \sqrt 3 }}{2}\) ;
b) \(2\cos {30^0} + 3\sin {45^0} - \cos {60^0}\)\( = 2.\dfrac{{\sqrt 3 }}{2} + 3.\dfrac{{\sqrt 2 }}{2} - \dfrac{1}{2}\)\( = \dfrac{{2\sqrt 3 + 3\sqrt 2 - 1}}{2}\).
