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Mathematics 18 Online
OpenStudy (anonymous):

Prove the following identity: (1/tanx) + tanx = (1/sinx cosx) I have attempted to convert 1 to sin^2x+cos^2x and then made both denominators equal but I am uncertain if I am correct or not. Thanks.

hartnn (hartnn):

write tan x as sin x/ cos x what u get ?

OpenStudy (anonymous):

(1/(sinx/cosx)) I'm not really sure how to do this though.

hartnn (hartnn):

(1/tanx) + tanx just replace tan x by sin x/cos x here what u get ?

OpenStudy (anonymous):

1/tanx + sinx/cosx

hartnn (hartnn):

there still is a tan x there, replace it too!

OpenStudy (anonymous):

(1/(sinx/cosx)) + sinx/cosx?

hartnn (hartnn):

correct, now what does (1/(sinx/cosx)) simplify to ?

OpenStudy (anonymous):

No idea...

hartnn (hartnn):

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