Linear Algebra Examples

Convert to Trigonometric Form i^8
Step 1
Rewrite as .
Step 2
Rewrite as .
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Step 2.1
Rewrite as .
Step 2.2
Rewrite as .
Step 2.3
Raise to the power of .
Step 3
One to any power is one.
Step 4
This is the trigonometric form of a complex number where is the modulus and is the angle created on the complex plane.
Step 5
The modulus of a complex number is the distance from the origin on the complex plane.
where
Step 6
Substitute the actual values of and .
Step 7
Find .
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Step 7.1
Raising to any positive power yields .
Step 7.2
One to any power is one.
Step 7.3
Add and .
Step 7.4
Any root of is .
Step 8
The angle of the point on the complex plane is the inverse tangent of the complex portion over the real portion.
Step 9
Since inverse tangent of produces an angle in the first quadrant, the value of the angle is .
Step 10
Substitute the values of and .