a) Determine an exper value for the sppression sin(5pi )/(4)=cos(11pi )/(6)cot(pi )/(3)

## Step1: Evaluate ### The angle is in the third quadrant where sine is negative. The reference angle is . Therefore, .## Step2: Evaluate ### The angle is in the fourth quadrant where cosine is positive. The reference angle is . Therefore, .## Step3: Evaluate ### The cotangent of an angle is the reciprocal of the tangent. , so .## Step4: Combine the results### Substitute the evaluated values into the original expression: . Simplify the right-hand side: .