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February 28, 2015

February 28, 2015

Posted by **Trig** on Sunday, November 9, 2008 at 2:12pm.

- Trigonometry -
**Reiny**, Sunday, November 9, 2008 at 3:10pmLeft Side

= cosy/(1+siny) + (1+siny)/cosy , notice the proper brackets !!

= (cos^ y + 1 + 2siny + sin^2 y)/[cosy(1+siny)]

= (2 + 2siny)/[cosy(1+siny)]

= 2(1+siny)/[cosy(1+siny)]

= 2/cosy

= 2secy

= Right Side

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