SOLUTION: Rewrite cos(x-7pi/4) in terms of sin(x) and cos(x)

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Question 1203100: Rewrite cos(x-7pi/4) in terms of sin(x) and cos(x)
Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
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Rewrite cos(x-7pi/4) in terms of sin(x) and cos(x)
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Use the formula of difference of arguments for the cosine function
in combination with table values of sine and cosine functions


     =  +  = 

                 =  - .    ANSWER

Solved.



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