Which trig function is 1+cos? Don't remember....

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- Jan 26th 2009, 06:42 PMkatchat64Quick Easy Question?
Which trig function is 1+cos? Don't remember....

- Jan 26th 2009, 06:48 PMLarrioto
are you talking about identities ?

- Jan 26th 2009, 06:50 PMkatchat64
Yes... I am talking about identities... and another question does anyone happen to know the identity of 1/sinx?

- Jan 26th 2009, 06:57 PMLarrioto
identities are squared and they are :

$\displaystyle sin^{2}x+cos^{2}x=1$

$\displaystyle 1+cot^{2}x=cosec^{2}x$

$\displaystyle tan^{2}x+1=sec^{2}x$ - Jan 27th 2009, 09:21 AMPanZerOlas