262 COS 6600Π√ 3Π61Z6=C) I = 1COS 2 2X D (2X) = 12 TAN 2X2

4 .

2

6

2 cos

0

π

√ 3

6

1

Z

=

c) I = 1

cos 2 2x d (2x) = 1

2 tan 2x