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Please answer fast 2+tan²a+cot²a=1/sin²a-sin⁴a prove |
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Answer» Step-by-step EXPLANATION: to SHOW 2+tan²a+cot²a=1/sin²a-sin⁴a 2+tan²a+cot²a=1+tan²a+1+cot²a=sec²a+cosec²a =1/cos²a+1/sin²a =sin²a+cos²a/(cos²asin²a) =1/(1-sin²a)(sin²a) SINCE 1-sin²a=cos²a =1/(sin²a-sin⁴a) |
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