Students were asked to simplify the expression W. Two students' work is given. 55GB Student A Student B sane 0059 1 Step 1: .oosl9 sec sacs Step1- me $669 6089 Step 2: 1_ 1 1-00629 0089 Step 2: ;g2 3669 Step 3: 1 - 0052 9 - 2 sun 9 . Step 3: . 2 Step 4. Sin 6 c0329 Step 4: tan2 9 Part A: Which student simplied 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)