i need help with these problems

i really dont understand how to do them

1.

[2sin (x)]/[1-cos^2(x)]

i really appreciate your help

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- August 6th 2009, 06:25 PMdannyp32Simplifying trig expressions (help please)
i need help with these problems

i really dont understand how to do them

1.

[2sin (x)]/[1-cos^2(x)]

i really appreciate your help - August 6th 2009, 07:06 PMartvandalay11