Find the exact value of the expression.tan 345°
A. 
B. 2 + 
C. -2 - 
D. 
Answer: C
Mathematics
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Find the area of the surface generated by revolving the curves about the indicated axis.x = sin t, y = 6 + cos t, 0 ? t ? 2?; x-axis
A. 36?2 B. 18?2 C. 6?2 D. 24?2
Mathematics
Find a polar equation for the circle.x2 + 
x + y2 = 0
A. r = 
sin ?
B. r = - 
sin ?
C. r = 
cos ?
D. r = - 
cos ?
Mathematics
Use reduction formulas to evaluate the integral.
A. - 
cot3 4x - 
cot 4x + x + C
B. - 
cot2 4x + 
cot 4x - x + C
C. - 
cot3 4x + 
cot 4x + x + C
D. - 
cot3 4x + 
cot 4x + C
Mathematics
Solve the problem.Using a phone card to make a long distance call costs a flat fee of $0.81 plus $0.16 per minute starting with the first minute. Find the total cost of a phone call which lasts 27 minutes.
A. $4.32 B. $27.13 C. $22.03 D. $5.13
Mathematics