Sep 18, 2012 #2 rl.bhat Homework Helper Messages 4,432 Reaction score 10 tanθ + sec - 1 = tanθ + secθ + tan2θ - sec2θ Factorise the last two terms and simplify. Substitute in the given problem and simplify.
tanθ + sec - 1 = tanθ + secθ + tan2θ - sec2θ Factorise the last two terms and simplify. Substitute in the given problem and simplify.