Find zw or 
as specified. Leave your answer in polar form.z = 5(cos 35° + i sin 35°)w = 2(cos 40° + i sin 40°)Find zw.
A. 10(cos 75° + i sin 75°)
B. 7(cos 75° + i sin 75°)
C. 7(cos 50.9° + i sin 50.9°)
D. 10(cos 50.9° + i sin 50.9°)
Answer: A
You might also like to view...
Evaluate the expression for the given value or values.-xy for x = - 5, y = -19
A. -64 B. 95 C. -95 D. 64
Between each pair of numbers, insert the appropriate sign, <, =, or >, to make a true statement.64.42 lb 64.57 lb
A. 64.42 lb > 64.57 lb B. 64.42 lb < 64.57 lb C. 64.42 lb = 64.57 lb
Solve the problem.A window is in the form of a rectangle surmounted by a semicircle. The rectangle is of clear glass, whereas the semicircle is of tinted glass that transmits only one-third as much light per unit area as clear glass does. The total perimeter is fixed. Find the proportions of the window that will admit the most light. Neglect the thickness of the frame.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Solve.An automobile is traveling at 51 ft/sec. The driver applies the brakes in such a way that the velocity decreases to zero according to the relation 
where t = time. Find an equivalent expression for v(t) by factoring out a factor with a negative coefficient.
A. -51(-1 + 0.01t2) B. 51(-1 + 0.01t2) C. -5.1(-10 + 0.01t2) D. 51(1 - 0.01t2)