Tolong di jawab makasih
1.
sin ( 2x – 60 )° = sin 60°
( 2x – 60 )° = 60° + k.360°
2x = 120° + k.360°
x = 60° + k.180°
k = 0——> x1 = 60° + 0.180° = 60°
k = 1 ——> x3 = 60° + 1.180° = 240°
k = 2 —–> x5 = 60° + 2.180° = 420° ( TM )
( 2x – 60 )° = ( 180° – 60° ) + k.360°
( 2x – 60 )° = 120° + k.360°
2x = 180° + k.360°
x = 90° + k.180°
k = 0 ——> x2 = 90° + 0.180° = 90°
k = 1 ——-> x4 = 90° + 1.180° = 270°
k = 2 ——> x6 = 90° + 2.180° = 450° ( TM )
HP = { 60°, 90°, 240°, 270° }