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. = - 
B. = - 
C. = 
D. = 

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Divide and express the result in standard form.

A. -1 B. -i C. 1 D. i

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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. - 

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Use summation notation to write the sum. ? ?

A.
B.
C.
D.
E.

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