P6SIN COS D 1I NX X X=Ò =64

9 . - 3 DE 15 P TICH PHAN NGUYEN HAM CO DAP AN 9 . - 3 DE 15 P TICH PHAN NGUYEN HAM CO DAP AN
Lớp 3 3 DE 15 P TICH PHAN NGUYEN HAM CO DAP AN

9

. B.

.

p

6

sin

cos d

1

I

n

x

x x

=

ò

=

64