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 
sin (csc-1 u)
A. 
B. u
C. 
D. 
Answer: D
Mathematics
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Solve the problem.From a distance of x feet to a 110-meter-high radio tower, the angle of elevation is ? degrees. Then 
Use a reciprocal identity to rewrite this formula.
A. 110 cot ?
B. 
C. 110 sec ?
D. 
Mathematics
Find the reference angle for the given angle.129°
A. 39° B. 61° C. 51° D. 49°
Mathematics
Determine whether the variation between the indicated quantities is direct or inverse.The distance traveled by you in a car and the time taken to drive this distance
A. Inverse B. Direct
Mathematics
Simplify the complex rational expression.
A. 
B. 
C. 
D. 
Mathematics