Where do I start with this:

cos^{-1}x + tan^{-1}x = π/2

Printable View

- Nov 14th 2012, 07:45 PMcdbowman42Inverse trigonometric equation
Where do I start with this:

cos^{-1}x + tan^{-1}x = π/2 - Nov 14th 2012, 07:50 PMMarkFLRe: Inverse trigonometric equation
I would take the cosine of both sides. The right side becomes zero, and on the left side you may apply the angle-sum identity for cosine.