13 with A in Quadrant III, and cos(B) 85 8 with B in Quadrant I. Find cos(A+B). 17 You are given that cos(A) | Give your answer as a fraction. Provide your answer below: cos (A + B) =

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A: f''(x)=-36 sin(6x)f'(x)=∫-36 sin(6x) dxf'(x)=-36 -cos(6x)6+Cf'(x)=6cos(6x)+Cf'(0)=-6-6=6 cos(0)…

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