WileyPLUS Suppose 0SolutionWe know that sin2 cos2 1 or sin2

Solution

We know that sin² +cos² = 1 or, sin² = 1- cos². Here, cos = 1/11 so that sin² = 1-(1/11)² = 1-1/121 = 120/121. Hence sin = ± (120/121) . Further, since 0 < < /2, we have sin = (120/121) = (230)/11.

Also, tan = sin/cos = [(230)/11/(1/11) ] = 230.