Express the complex number in trigonometric form.

-6i

6(cos 0° + i sin 0°)

6(cos 270° + i sin 270°)

6(cos 180° + i sin 180°)

6(cos 90° + i sin 90°)

Question

Express the complex number in trigonometric form.

-6i

 6(cos 0° + i sin 0°)

 6(cos 270° + i sin 270°)

 6(cos 180° + i sin 180°)

 6(cos 90° + i sin 90°)

anonymous · Answer

it can't be the first since sin 0 is 0
think about the remaining three

anonymous · Answer

I honestly have no idea how to even start that, my teacher didn't explain it properly so its confusing me. Can we go through this step by step? @Kanwar245

anonymous · Answer

6(cos 270° + i sin 270°)

anonymous · Answer

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anonymous · Answer

ohhhhh so thats how you figure it out?

anonymous · Answer

well how do you know that 6i is there? @myko

anonymous · Answer

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