SOLUTION: cos (theta-(3pi/4)) is equivalent to which of the following?
a. {{{expr(-sqrt(3)/2)(cos(theta)-sin(theta))}}}
b. {{{expr(-sqrt(3)/2)(cos(theta)+sin(theta))}}}
c. {{{expr(-sqrt
Question 467094: cos (theta-(3pi/4)) is equivalent to which of the following?
a.
b.
c.
d.
e.
f.
Thank you sooooooooo much in advance!!! This question has been driving me bonkers;-)!!! Found 2 solutions by lwsshak3, Edwin McCravy:Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website! cos (theta-(3pi/4))
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What you have here is a cosine function of the form: y=Acos(Bx-C) with A=amplitude, period=2π/B, and phase shift=C/B
For given cosine function, y=cos(x-3π/4)
Amplitude=1
B=1
Period=2π/1=2π
Phase shift=3π/4 to the right
Ans:
What you have here is a cosine function whose value varies from +1 to -1 over one period(2π), depending on what theta(x) is. Answer by Edwin McCravy(20063) (Show Source): You can put this solution on YOUR website!
The other tutor thought you wanted to graph the equation.
Use the formula
Next we use the facts that and
Factor out
Choice e.
Edwin