Find the fourth roots of 16(cos 200° + i sin 200°).

The fourth roots of 16(cos 200° + i sin 200°) are .

Step-by-step explanation:

The given expression is

Using deMoivre's Theorem

The four roots are in the form of

For n=1,

For n=2,

For n=3,

Therefore the fourth roots of 16(cos 200° + i sin 200°) are .

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step-by-step explanation:

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.