Proving Trig Identities: sec x (1 + cos x) = 1 + sec x

[laura.edan]

i'm stuck on this one question.

secx(1+cosx) = 1+secx

what i've got is this:

1/cosx(1+cosx)= 1+ 1/cosx

i'm not sure if i'm even on the right track..
please help!
thanks

 

[skeeter]

Re: Proving Trig Identities....

using the original equation, distribute the left side ... what do you get?

 

[laura.edan]

Re: Proving Trig Identities....

would it be...
secx+ secxcosx ??

 

[skeeter]

Re: Proving Trig Identities....

good ... what does secxcosx simplify to?

 

[laura.edan]

Re: Proving Trig Identities....

1 right?thank you...