2SIN(X + 150) + 1 = 0 2) 3COS(X – = 2 3) 2COS(3X – 150) + 2= 0 4) TAN( 12 ) 3X  2 2 2CO X COT( 20 )0 3 0SIN 4 04X

1) 2sin(x + 15

0

) + 1 = 0 2) 3cos(x – 1) = 2 3) 2cos(3x – 15

0

) +

2

= 0 4) tan( 12 ) 3x  2 2 2co x cot( 20 )

0

3 0sin 4 04x