Answer:
1/6x
Explanation:
0-21x/ 2
-2/12x multiply the Monomial
-1/6x
I think this one will help and I hope u understand
0
(sorry I am on my computer but anything as 21π/2 is a fraction)
Cot= cos x/sin x
cot(21π/2 - 0) =0
Simplified
cot(21π/2)
=cot(π/2)
=0
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