1.

If θ = 9°, then what is the value of Cot θ cot 2 θ cot 3 θ cot 4 θ cot 5 θ cot 6 θ cot 7 θ cot 8 θ cot 9 θ ?

A. 13
B. 3 - 1
C. 1
D. 3
Answer» D. 3


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