Decide whether the equation is or is not an identity.tan ? + tan ? = 

A. Not an identity
B. Identity


Answer: B

Mathematics

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Find the inverse of the function.f(x) = 

A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. Not a one-to-one function

Mathematics

Find the angle between the vectors u and v.





A) 175°
B) 40°
C) 105°
D) 75°
E) 165°


Mathematics

Find the cardinal number of the set.The numbers in the Venn Diagram below represent cardinalities. Find n(A ? B). 

A. 52 B. 24 C. 48 D. 4

Mathematics

Solve the equation and check your proposed solution.22 = f - 9

A. -31 B. 13 C. -13 D. 31

Mathematics