Question

If sec = x + 1/4x ,then probe that sec + tan = 2x or 1/2x

Answer 1

 √[(x2 + 1/16x2 + 1/2) - 1] = √[x2+ 1/16x2 - 1/2] = √[(x - 1/4x)2] = (x - 1/4x) Sec A + Tan A = (x + 1/4x) + (x - 1/4x) = 2x ...