I am not understanding how to do these problems

I have to do this for

a) sec^-1 (- sqroot 2)

b) sec^-1 (2/sq root3)

c) sec^-1 (-2)

Can someone please explain to me what to do and how to figure these problems out. Thanks!!

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- Apr 7th 2010, 05:53 PMKarlosKReference Triangle for Inverse Trig Functions
I am not understanding how to do these problems

I have to do this for

a) sec^-1 (- sqroot 2)

b) sec^-1 (2/sq root3)

c) sec^-1 (-2)

Can someone please explain to me what to do and how to figure these problems out. Thanks!! - Apr 7th 2010, 06:01 PMdwsmith