Hey can I get some help with this :).

If: A = 1+sin(x) / cos (x) then prove 1/A = 1-sin(x) / cos (x).

Thanks ;)!

Printable View

- Mar 30th 2013, 07:06 PMintexHelp with Trigonometric Identiy
Hey can I get some help with this :).

If: A = 1+sin(x) / cos (x) then prove 1/A = 1-sin(x) / cos (x).

Thanks ;)! - Mar 30th 2013, 07:21 PMProve ItRe: Help with Trigonometric Identiy
You didn't think to invert both fractions?

- Mar 30th 2013, 07:23 PMintexRe: Help with Trigonometric Identiy
Wouldn't an inversion of A give cos (x) / 1 + sin (x) which =/= 1-sin(x) / cos(x)

- Mar 30th 2013, 07:29 PMProve ItRe: Help with Trigonometric Identiy
That's just the first step. Now try multiplying top and bottom by the bottom's conjugate.

- Mar 30th 2013, 07:32 PMintexRe: Help with Trigonometric Identiy
Ahhhhhhh. Thanks very much, I understand the concept now!