Question

Write the complex number in the form a + bi.

sqrt 6(cos 315° + i sin 315°)

Answer 1

whats sqrt 6* cos 315=.. ?

Answer 2

315˚=360˚-45˚
=> √6(cos-45˚ + i sin-45˚)
=> √6(1/√2 - i/√2)
=> √3 - i√3 [ √6/√2 = √3√2/√2 = √3]