6. Write the polar form of the vector 3+j4 A. 6< 53.1° C. 5 < 53.1° D. 8 < 53.1° B. 10 < 53.1°

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter8: Applications Of Trigonometry
Section8.4: The Dot Product
Problem 31E
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MULTIPLE CHOICE

6. Write the polar form of the vector 3+j4
C. 5< 53.1°
D. 8 < 53.1°
A. 6< 53.1°
В. 10 <53.1°
7. Simplify (3 – j)² – 7(3 – j) + 10
А. — (3 + j)
В. З +j
С. 3 —ј
D. -(3 – j)
8. If A = 40ej120°, B = 20 < -40°, C = 26.46+ j0, solve for A + B + C.
A. 27.7 < 45°
B. 35.1 < 45°
C. 30.8 < 45°
D. 33.4 < 45°
9. Evaluate cosh(j-)
A. 0.707
B. 1.14 + j0.866
C. 0.5 + j0.707
D. j0.707
(2+j3)(5-j)
10. Simplify
(3-j2)2
221-j91
А.
-7+j1
С.
169
13
21+j52
В.
-90+j220
D.
13
169
Transcribed Image Text:6. Write the polar form of the vector 3+j4 C. 5< 53.1° D. 8 < 53.1° A. 6< 53.1° В. 10 <53.1° 7. Simplify (3 – j)² – 7(3 – j) + 10 А. — (3 + j) В. З +j С. 3 —ј D. -(3 – j) 8. If A = 40ej120°, B = 20 < -40°, C = 26.46+ j0, solve for A + B + C. A. 27.7 < 45° B. 35.1 < 45° C. 30.8 < 45° D. 33.4 < 45° 9. Evaluate cosh(j-) A. 0.707 B. 1.14 + j0.866 C. 0.5 + j0.707 D. j0.707 (2+j3)(5-j) 10. Simplify (3-j2)2 221-j91 А. -7+j1 С. 169 13 21+j52 В. -90+j220 D. 13 169
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