The answer is 4. I but it has to be capital
Answer:
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Step-by-step explanation:

Use the distributive property to multiply each term of the first binomial by each term of the second binomial.
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Collect like terms
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Sec x is equal to 1/cosx, cot x is equal to cosx/sinx. cos x cancels, and you are left with 1/sinx. this is equal to cscx. Cosecant is : hypotenuse / opposite, so the answer is **D**
The answer should be "filtration" because distillation is for liquids. Filtration filters out the unwanted products.