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OpenStudy (anonymous):
how do you multiply and simplify (1+cot(a))^2
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Directrix (directrix):
Is the entire quantity 1 + cot(a) squared? Or, is just the cos(a) squared? @ajfkhdgfggg
OpenStudy (kainui):
Do you know how to foil? Don't freeze when you see a squared. Just write whatever it is next to it and start distributing.
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