加减用代数式,乘除用指数式,本题是加减,要转换成代数式:
2∠45 + 1∠-30
= 2 cos45° + j 2 sin45° + cos(- 30°) + j sin(- 30°)
= √2 + j √2 + √3/2 - j 0.5
= (√2 + √3/2) + j (√2 - 0.5)
= 2.28 + j0.9142
= 2.456∠21.84°
加减用代数式,乘除用指数式,本题是加减,要转换成代数式:
2∠45 + 1∠-30
= 2 cos45° + j 2 sin45° + cos(- 30°) + j sin(- 30°)
= √2 + j √2 + √3/2 - j 0.5
= (√2 + √3/2) + j (√2 - 0.5)
= 2.28 + j0.9142
= 2.456∠21.84°