Find the phase shift.y = -4 cos
A. 
units to the left
B. 4? units to the right
C. 
units to the right
D. ? units to the left
Answer: D
Mathematics
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Solve the following equation for x.x - 
= 0
A. x = - 
B. x = - 
C. x = 
D. x = 
Mathematics
Divide and express the result in standard form.
A. -1 B. -i C. 1 D. i
Mathematics
Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, 
), on the circle 
, also lies on the terminal side of an angle ? in quadrant II. The point 
, on the circle 
, also lies on the terminal side of an angle ? in quadrant III.f(2?)
A. 
B. 
C. - 
D. - 
Mathematics
Use summation notation to write the sum.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics