How do you express the complex number in trigonometric form # 3(cos 90° + i sin 90°)#?

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How do you express the complex number in trigonometric form # 3(cos 90° + i sin 90°)#?

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Answer 1 · 2015-06-05T19:52:31

Your number, which is in trigonometric form, can be expressed in standard or rectangular form, #z=a+ib#, considering that:
#cos(90°)=0#
#sin(90°)=1#
Giving you:
#z=3(0+1i)=3i# a pure immaginary.

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How do you express the complex number in trigonometric form # 3(cos 90° + i sin 90°)#?

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