Proving question

[lauv]

Hi everyone,

I have been on this proving question for some time, hope to get some help here.

The question goes like this:

Prove the identity ($$(1/cos x - tan x)^2 = (1-sin x)/(1+sinx)$$
All the help that can be offered is greatly appreciated, thank you!

 

[Deleted member 4993]

Hi everyone,

I have been on this proving question for some time, hope to get some help here.

The question goes like this:

Prove the identity ($$(1/cos x - tan x)^2 = (1-sin x)/(1+sinx)$$
All the help that can be offered is greatly appreciated, thank you!

Can you rewrite tan(x) as a function of sin(x) and cos(x)?

Please show us what you have tried and exactly where you are stuck.

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