Complete the identity.tan 
+ cot 
= ?
A. 2 cot ?
B. -2 cot ?
C. 2 csc ?
D. -2 csc ?
Answer: C
Mathematics
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Find the derivative of the function.r = 
(5 - ?)
A. 
= 
+ 5
B. 
= - 
- 1
C. 
= 
+ 1
D. 
= ?2 - 1
Mathematics
Decide whether the given statement is always true or not always true.A ? (B ? C) = (A ? B) ? C
A. Not always true B. Always true
Mathematics
Find the domain of the rational function.f(x) = 
A. All real numbers except 6, -2, 
, and 0
B. All real numbers except 6, -2, and 
C. All real number except -6 and -2
D. All real numbers except 6 and -2
Mathematics
Simplify the expression.
+ 
A. 
B. 
C. 
D. 
Mathematics