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With the information provided in the question there is no simple answer. You need to carry out each multiplication, and then combine all like terms. The resulting expression then needs to be ordered in some way although the can often be a considerable degree of arbitrariness here.

For example:

(2 + cosx)*(3*sinx - tanx) = 6*sinx - 2*tanx + 3*cosx*sinx - sinx.

There is no objective reason that will determine the order for the trigonometric ratios! Any of them could be first.

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10y ago

What else can I help you with?