0000:00:00:00:00Start38Number 38ExplanationIf sinx−siny=−13\sin x - \sin y = -\frac{1}{3}sinx−siny=−31 and cosx−cosy=12\cos x - \cos y = \frac{1}{2}cosx−cosy=21, then the value of sin(x+y)\sin(x + y)sin(x+y) = ....1213\frac{12}{13}13121215\frac{12}{15}15121217\frac{12}{17}17121219\frac{12}{19}19121221\frac{12}{21}2112
38Number 38ExplanationIf sinx−siny=−13\sin x - \sin y = -\frac{1}{3}sinx−siny=−31 and cosx−cosy=12\cos x - \cos y = \frac{1}{2}cosx−cosy=21, then the value of sin(x+y)\sin(x + y)sin(x+y) = ....1213\frac{12}{13}13121215\frac{12}{15}15121217\frac{12}{17}17121219\frac{12}{19}19121221\frac{12}{21}2112
