[Video Solution] Let θ = π \over 5 and A = \left[ \matrix \cos θ & \sin θ \cr - \si... | ASPIRE STUDY

Let θ = π \over 5 and A = \left[ \matrix \cos θ & \sin θ \cr - \sin θ & \cos θ \cr \right]. If B = A + A4, then det (B) : | Watch the step-by-step video solution for this NIMCET PYQ.