Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.cot 750°
A. -
B. 
C. - 
D. 
Answer: D
Mathematics
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Find the gradient field of the function.f(x, y, z) = ln
+ z4
A. ?f = 
i + 
j + 
k
B. ?f = 
i + 
j + 
k
C. ?f = 
i + 
j + 
k
D. ?f = 
i + 
j + 
k
Mathematics
Find the focus and directrix of the parabola.x = 6y2
A. 
, y = - 
B. 
, x = - 
C. 
, x = 
D. 
, x = - 
Mathematics
Provide an appropriate response.Find the area of the gray ring formed by the cross-cut section. Round to the nearest tenth. 
A. 11 cm2 B. 25.6 cm2 C. 102.3 cm2 D. 119.6 cm2
Mathematics
Provide an appropriate response.Does a customer earn a cash discount with terms 2/15, net 30 on an invoice dated April 27 that is paid on May 13?
What will be an ideal response?
Mathematics