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practice question, I attached a picture

x2 1 as much as possible after substituting cot(0) for x. (Assume 0° < 0 < 90°.)
Simplify the expression
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x2 1 as much as possible after substituting cot(0) for x. (Assume 0° < 0 < 90°.) Simplify the expression

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The Known Pythagorean identity is cosec2 ...

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