6 a Fill in the table with the exact values and their approximations where necessary 27 44 2n 7n 4 ST TO C HT SR n 3 n 4 4 X J 2 sinx COSX tan x b Sketch y cot x for 27 x 2 T B sin COS X Ita 4 10 0 0 0 1 0 4 42 42 I wer 4 4 2 1 lo 0 und 7 2 34 22 SHE 3 r 4 TC I 0 ol 42 S 3 4 2 und 4 42 1 7 2 4 27 0