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I have three math problems I don't even know where to start. If you could help please.
1) sec x (csc x - cot x * cos x) = tan x
2) cos^2 x + tan^2 x cos^2 x = 1
For problems 1&2 x is theta
3) (cscx-sinx)^2= cot^2 x - cos^2 x
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