Question 11 (Essay Worth 10 points) (06.01, 06.03 HC) Students were asked to simplify the expression SCU - sing Two students' work is given. CSC 6 Student A Student B Step 1: csco sine 1 - sine csco csco Step 1: sine csco - 1- sine Step 2: 1 1- sine sine Step 2 sine csco Step 3: 1 - sin2 0 Step 3: cos 9 Step 4: cos2 0 sin2 0 Step 4: cot2 0 Part A: Which student simplified the expression incorrectly? Explain the errors that were made or the formulas that were misused. (5 points) Part B: Complete the student's solution correctly, beginning with the location of the error. (5 points)Question 12 (Essay Worth 10 points) (06.02 HC) Although 240 is a special angle on the unit circle, Aiden wanted to determine its coordinates using the sum and difference formulas. Part A: Determine cos 240' using the cosine sum identity. Be sure to include all necessary work. (5 points) Part B: Determine sin 240' using the sine difference identity. Be sure to include all necessary work. (5 points)