Trigonometry Examples

Convert to Trigonometric Form sec(x)^2-1
Step 1
Apply pythagorean identity.
Step 2
This is the trigonometric form of a complex number where is the modulus and is the angle created on the complex plane.
Step 3
The modulus of a complex number is the distance from the origin on the complex plane.
where
Step 4
Substitute the actual values of and .
Step 5
Find .
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Step 5.1
Raising to any positive power yields .
Step 5.2
Multiply the exponents in .
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Step 5.2.1
Apply the power rule and multiply exponents, .
Step 5.2.2
Multiply by .
Step 5.3
Add and .
Step 5.4
Rewrite as .
Step 5.5
Pull terms out from under the radical, assuming positive real numbers.
Step 6
The angle of the point on the complex plane is the inverse tangent of the complex portion over the real portion.
Step 7
Substitute the values of and .