Find the value of tan-1(-tan13π/8) Share with your friends Share 1 Tanveer Sofi answered this We havetan-1-tan13π8=tan-1-tan2π-3π8=tan-1--tan3π8 As, tan2π-θ=-tanθ=tan-1tan3π8=3π8 As, tan-1tanθ=θ, if -π2<θ<π2Hence, tan-1-tan13π8=3π8 0 View Full Answer Janmesh Kumar answered this -13π/8 0
