Could someone show me the first couple of steps of this Proof.

2/1+cosx - tan^2(x/2) = 2cosx/1+cosx.

Im working with the left side. I know to use Half-Angle I.D. I've tried all 3 tan Half angles. just keep getting hung up.

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- Oct 27th 2010, 04:19 PMBrndo4uTrig Proof
Could someone show me the first couple of steps of this Proof.

2/1+cosx - tan^2(x/2) = 2cosx/1+cosx.

Im working with the left side. I know to use Half-Angle I.D. I've tried all 3 tan Half angles. just keep getting hung up. - Oct 27th 2010, 05:00 PMskeeter
- Oct 27th 2010, 05:18 PMBrndo4u
I understand that it is not an equation. I need to verify that one side equals the other.

- Oct 27th 2010, 05:55 PMskeeter