SOLUTION: Write the expression as a single real number. Do not use decimal approximations.
cos(3pi/4) cos(pi)+ sin(3pi/4) sin(pi)
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Question 595438: Write the expression as a single real number. Do not use decimal approximations.
cos(3pi/4) cos(pi)+ sin(3pi/4) sin(pi)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
cos(3pi/4) cos(pi)+ sin(3pi/4) sin(pi)
(-sqrt(2)/2)(-1)+ (sqrt(2)/2)(0)
sqrt(2)/2
So \cos\left(\pi\right)+\sin\left(\frac{3\pi}{4}\right)\sin\left(\pi\right) = \frac{\sqrt{2}}{2} "x")
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