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

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Answer 1 · 2018-04-09T10:34:25

#-2.9+0.75i#

#"evaluate cos and sin and multiply result by 3"#

#=3(-0.968+i0.25)#

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

Answer 2 · 2018-04-09T10:36:48

Standard form: #-2.90+0.75i#

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]