Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).15 + 20i
A. 25(cos 233.1° + i sin 233.1°)
B. 25(cos 53.1° + i sin 53.1°)
C. 25(cos 306.9° + i sin 306.9°)
D. 25(cos 126.9° + i sin 126.9°)
Answer: B
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Solve the differential equation.cos x 
+ y sin x = sin x cos x
A. y = cos x ln 
+ C cos x
B. y = cos x ln 
+ C cos x
C. y = cot x + C cos x
D. y = sin x ln 
+ C sin x
Graph the inverse of the function plotted, on the same set of axes. Use a dashed curve for the inverse.
A. 
B. 
C. 
D. 
Solve the problem.Edwardo wants to make a walk out of paving brick. He has enough bricks to pave 22 square yards. How long can the walk be if it is 4 feet wide? (3 feet = 1 yard)
A. 16
yards
B. 5
yards
C. 7
yards
D. 29
yards
Provide an appropriate response.Use a calculator to find: ln 32 Round to thousandths.
Fill in the blank(s) with the appropriate word(s).