Sabrina8579
New member
- Dec 29, 2012
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1.Solve the equation on the interval [0, 2?).
tan2x sin x = tan2x
A.0,pi/2
B.pi/2,2n
C.pi/2,n
D.0,n
2.Plot the complex number.
-5?3 - 5i
3.Find the magnitude ||v|| and direction angle ?, to the nearest tenth of a degree, for the given vector v. v = -4i - 3j
A. 5; 233.1°
B. 7; 216.9°
C. 5; 216.9°
D. 5; 36.9°
4.Find the unit vector that has the same direction as the vector v. v = 3i + j
A.u=3/?10i+1/?10j
B. u=3/?11i+1/?11j
C.u=3?10i+?10j
D.?10/3i+?10j
5.Find the work done by a force of 4 pounds acting in the direction of 41° to the horizontal in moving an object 5 feet from (0, 0) to (5, 0).
A. 13.1 ft-lb
B. 16.2 ft-lb
C. 15.1 ft-lb
D. 30.2 ft-lb
tan2x sin x = tan2x
A.0,pi/2
B.pi/2,2n
C.pi/2,n
D.0,n
2.Plot the complex number.
-5?3 - 5i
3.Find the magnitude ||v|| and direction angle ?, to the nearest tenth of a degree, for the given vector v. v = -4i - 3j
A. 5; 233.1°
B. 7; 216.9°
C. 5; 216.9°
D. 5; 36.9°
4.Find the unit vector that has the same direction as the vector v. v = 3i + j
A.u=3/?10i+1/?10j
B. u=3/?11i+1/?11j
C.u=3?10i+?10j
D.?10/3i+?10j
5.Find the work done by a force of 4 pounds acting in the direction of 41° to the horizontal in moving an object 5 feet from (0, 0) to (5, 0).
A. 13.1 ft-lb
B. 16.2 ft-lb
C. 15.1 ft-lb
D. 30.2 ft-lb