Rewrite the trigonometric expression as an algebraic expression involving the variable u. Assume that 
and that the value of the "inner" inverse trigonometric expression represents an angle ? such that 
cos (tan-1 u)
A. u
B. 
C. 
D. 
Answer: D
Mathematics
You might also like to view...
Solve the problem.Write an iterated triple integral in the order 
for the volume of the region in the first octant enclosed by the cylinder 
and the plane 
.
A. 
B. 
C. 
D. 
Mathematics
Graph the polar equation.r = 1 + cos ?
A. 
B. 
C. 
D. 
Mathematics
Simplify.
A. 
B. 
C. 
D. 
Mathematics
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos ? = 
, 0 < ? < 
Find cos 
.
A. 
B. 
C. 
D. 
Mathematics