Find the exact value of the expression using a sum or difference identity.sin 285°
A. - 
B. - 
C. 
D. 
Answer: A
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Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x| ? 0.1, |y| ? 0.1, |z| ? 0.1
A. |E| ? 9.8821 B. |E| ? 11.4193 C. |E| ? 9.2233 D. |E| ? 10.5409
Use the given conditions to write an equation for the line in point-slope form.Passing through (-2, -7) and (-8, -3)
A. y - 7 = - 
(x - 2) or y - 3 = - 
(x - 8)
B. y + 7 = - 
(x + 8) or y + 3 = - 
(x + 2)
C. y + 7 = - 
x - 2 or y + 3 = - 
x + 7
D. y + 7 = - 
(x + 2) or y + 3 = - 
(x + 8)
Eliminate the parameter. Write the resulting equation in standard form.A circle: x = 2 + 2 cos t, y = 4 + 2 sin t
A. 
+ 
= 1
B. 
+ 
= 1
C. (x - 2)2 + (y - 4)2 = 4
D. 
+ 
= 1
Use a table and/or a graph to decide whether the limit exists. If it exists, find its value.
A. -1 B. Does not exist C. 5 D. 0