Find the exact value of the expression without using a calculator.cos 
cos 
+ sin 
sin 
A. 
B. 
C. 
D. - 1
Answer: B
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Use a spherical coordinate integral to find the volume of the given solid.the solid bounded below by the hemisphere 
and above by the cardioid of revolution 
A. 
?
B. 
?
C. 
?
D. 362?
Solve the problem.Write an iterated triple integral in the order 
for the volume of the region in the first octant enclosed by the cylinder 
and the plane 
.
A. 
B. 
C. 
D. 
Solve the problem.In one area, the lowest angle of elevation of the sun in winter is 25° 1'. A fence is to be built 
away from a plant in the direction of the sun. (See drawing) Find the maximum height, x , for the fence so that the plant will get full sun. Round your answer to the tenths place when necessary.
A. 5.5 ft B. 6.2 ft C. 6.5 ft D. 7.7 ft
Simplify the expression.
A. undefined B. tan(4x + ?) C. 0 D. tan(4x - ?)