How do you write the trigonometric form into a complex number in standard form 3(cos 165.5+isin165.5)?

2 Answers
Apr 9, 2018

-2.9+0.75i

Explanation:

"evaluate cos and sin and multiply result by 3"

=3(-0.968+i0.25)

=-2.9+0.75ilarrcolor(blue)"in standard form"

Apr 9, 2018

Standard form: -2.90+0.75i

Explanation:

Trigonometric form: 3(cos165.5+isin165.5)

Standard form: 3(0.967+i*0.254)~~ (-2.90+0.75i) (2dp)

Standard form: -2.90+0.75i [Ans]