Use the cofunction and reciprocal identities. Round to the nearest ten-thousandth when appropriate.cot 66° = tan  = 

A. 24°, cot
B. 156°, tan
C. 114°, sin
D. 24°, tan


Answer: D

Mathematics

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Solve the problem.The current in the circuit is 7.00 mA. Determine the magnitude of the impedance across the combination of the capacitor, the resistor, and the inductors (between points a and d).XC = 2700 ?R = 1350 ?XL = 1500 ?  ? I

A. Z = 24 ? B. Z = 150 ? C. Z = 2018 ? D. Z = 3371 ?

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Find the cube root of the number. Approximate the answer to the nearest hundredth whenever appropriate.- 

A. 2
B. - 
C.
D. -2

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Use the echelon method to solve the system of two equations in two unknowns.2x + 6y = 410x + 30y = 20

A.  
B.
C.  
D. No solution

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Simplify. Be sure to rationalize the denominator. Assume that all variables represent positive real numbers.

A.  + 6
B. x - 6
C. x + 6
D.  - 6

Mathematics