Please help me prove this trig identity

{{{ (1-secx)/(1+secx) = (cosx-1)/(cosx+1) }}}

this is the middle of a section and they have turned up the gears, i think if i am shown how i will be able to figure the rest out.

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Please help me prove this trig identity

{{{ (1-secx)/(1+secx) = (cosx-1)/(cosx+1) }}}

this is the middle of a section and they have turned up the gears, i think if i am shown how i will be able to figure the rest out.

{{{ (1-secx)/(1+secx) = (cosx-1)/(cosx+1) }}}

this is the middle of a section and they have turned up the gears, i think if i am shown how i will be able to figure the rest out.

- ianhendry
**Posts:**4**Joined:**Wed Feb 01, 2012 2:06 am

ianhendry wrote:Please help me prove this trig identity

{{{ (1-secx)/(1+secx) = (cosx-1)/(cosx+1) }}}

What did you get when you converted the left-hand side to sines and cosines, converted the fractions to common denominators, and simplified?

- nona.m.nona
**Posts:**256**Joined:**Sun Dec 14, 2008 11:07 pm

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