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i guess change the left side?

Can you show me how? I don't understand how to apply the identities.

are those 2's all ² ?

Ops, yeah.

Is it 1+tan^2x ? I couldnt get the thing to work, I dont have a number pad on my computer :(

I'm still confused :/

What would cancel out?

What about the 1+ in the front and the sin^2x?

Hmmm, would it be\[1+\frac{ 1 }{ \cos^2x }\sin^2x\] ?

@exitfreshly Do you know to solve this?