frazzles14
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Please can someone explain how I would prove this identity:

((sinx)/(1+cosx))+ ((1-cosx)/(sinx)) = 2tan (x/2)

I can't work out how to simplify past 2sinx/1+cosx, so the reasons behind each step would be much appreciated - thank you!
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gyuigygh
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I continued from where you left off.
I used the double angle identities but replaced 2x with x.
Ask me if confused.
Name:  IMG_20200802_214757.jpg
Views: 12
Size:  97.9 KB
I replaced sinx and cosx with the two equations I showed in the identities box.
(this is second year a level maths)
Last edited by gyuigygh; 1 month ago
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frazzles14
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(Original post by gyuigygh)
I continued from where you left off.
I used the double angle identities but replaced 2x with x.
Ask me if confused.
Name:  IMG_20200802_214757.jpg
Views: 12
Size:  97.9 KB
I replaced sinx and cosx with the two equations I showed in the identities box.
(this is second year a level maths)
Ah thank you so much!!
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Muttley79
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(Original post by gyuigygh)
I continued from where you left off.
I used the double angle identities but replaced 2x with x.
Ask me if confused.

I replaced sinx and cosx with the two equations I showed in the identities box.
(this is second year a level maths)
In future, please note it is against the rules to post solutions on this website
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