Which expression is equivalent to cscαcscβcos(α+β) for all values of α and β for which cscαcscβcos(α+β) is defined? A. 1+tanαtanβ B. cotαcotβ−1 C. cotα+cotβ D. tanα−tanβ
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Which expression is equivalent to cscαcscβcos(α+β) for all values of α and β for which cscαcscβcos(α+β) is defined?
A. 1+tanαtanβ
B. cotαcotβ−1
C. cotα+cotβ
D. tanα−tanβ
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