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Proving
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-2 = (cot2 x) / (1 csc x) (cot2 x) / (1 - csc x)

I'm looking over a classmate's math work and I'm writing down whatever I could understand from her notes, but I feel like this is more complicated than what it should be. Can anyone help me find a much more simpler way of doing this?

My work so far: https://imgur.com/a/qB5ctnE

Hers: https://imgur.com/a/YNbYVzI Extra note: the 2nd column only displays the numerator since she didn't need to use the denominator until the last couple of steps

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6 years ago