270 4 a Fill in the table with the exact values and their approximations where necessary 4 44 T 5 K 44 42 2 und S A TE 2n 7n 4 4 51 4 3 n 4 X IT 2 sin x CSC X sinx b Sketch y csc x for 2 Pi x 2 I 4 0 10 0 und 5 0 wam 4 AT 4 21 I 4 2 3 4 K it 0 5 4 3 2 T 7x 4 42 1 2 2 T 7 2 4 und