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Helle, i need help for simplify the expression: [( cos x) ( sin x) - ( sin x) ( - sin x)] / ( sin x) ²

Helle, i need help for simplify the expression:
[( cos x) ( sin x) - ( sin x) ( - sin x)] / ( sin x) ²
0 0
ReportAnswer #1
(cosx*sinx + sinx*sinx)/(sinx*sinx)

(cosx + sinx)/sinx

cotx + 1
ReportAnswer #2
sorry, Hector

cos x does not mean cos * x
cosine is a function, so it means cos(x)
ReportAnswer #3
(cos sinx²+ sin²x²)/sin²x²
= [(cos sin + sin²)x]/sin²x²
=(cos + sin)/x
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Helle, i need help for simplify the expression: [( cos x) ( sin x) - ( sin x) ( - sin x)] / ( sin x) ²
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