Convert to Trigonometric Form (cot(t))/(csc(t)-sin(t))

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Trigonometry

$\frac{\cot (t)}{\csc (t) - \sin (t)}$

Rewrite $\cot (t)$ in terms of sines and cosines.

$\frac{\frac{\cos (t)}{\sin (t)}}{\csc (t) - \sin (t)}$

Rewrite $\csc (t)$ in terms of sines and cosines.

$\frac{\frac{\cos (t)}{\sin (t)}}{\frac{1}{\sin (t)} - \sin (t)}$

Multiply the numerator by the reciprocal of the denominator.

$\frac{\cos (t)}{\sin (t)} \cdot \frac{1}{\frac{1}{\sin (t)} - \sin (t)}$

Multiply $\frac{\cos (t)}{\sin (t)}$ and $\frac{1}{\frac{1}{\sin (t)} - \sin (t)}$ .

$\frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))}$

Separate fractions.

$\frac{1}{\frac{1}{\sin (t)} - \sin (t)} \cdot \frac{\cos (t)}{\sin (t)}$

Convert from $\frac{\cos (t)}{\sin (t)}$ to $\cot (t)$ .

$\frac{1}{\frac{1}{\sin (t)} - \sin (t)} \cot (t)$

Convert from $\frac{1}{\sin (t)}$ to $\csc (t)$ .

$\frac{1}{\csc (t) - \sin (t)} \cot (t)$

Combine $\frac{1}{\csc (t) - \sin (t)}$ and $\cot (t)$ .

$\frac{\cot (t)}{\csc (t) - \sin (t)}$

This is the trigonometric form of a complex number where $| z |$ is the modulus and $θ$ is the angle created on the complex plane.

$z = a + b i = | z | (\cos (θ) + i \sin (θ))$

The modulus of a complex number is the distance from the origin on the complex plane.

$| z | = \sqrt{a^{2} + b^{2}}$ where $z = a + b i$

Substitute the actual values of $a = \frac{\cot (t)}{\csc (t) - \sin (t)}$ and $b = 0$ .

$| z | = \sqrt{0^{2} + {(\frac{\cot (t)}{\csc (t) - \sin (t)})}^{2}}$

Find $| z |$ .

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Raising $0$ to any positive power yields $0$ .

$| z | = \sqrt{0 + {(\frac{\cot (t)}{\csc (t) - \sin (t)})}^{2}}$

Rewrite $\cot (t)$ in terms of sines and cosines.

$| z | = \sqrt{0 + {(\frac{\frac{\cos (t)}{\sin (t)}}{\csc (t) - \sin (t)})}^{2}}$

Rewrite $\csc (t)$ in terms of sines and cosines.

$| z | = \sqrt{0 + {(\frac{\frac{\cos (t)}{\sin (t)}}{\frac{1}{\sin (t)} - \sin (t)})}^{2}}$

Multiply the numerator by the reciprocal of the denominator.

$| z | = \sqrt{0 + {(\frac{\cos (t)}{\sin (t)} \cdot \frac{1}{\frac{1}{\sin (t)} - \sin (t)})}^{2}}$

Multiply $\frac{\cos (t)}{\sin (t)}$ and $\frac{1}{\frac{1}{\sin (t)} - \sin (t)}$ .

$| z | = \sqrt{0 + {(\frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))})}^{2}}$

Use the power rule ${(a b)}^{n} = a^{n} b^{n}$ to distribute the exponent.

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Apply the product rule to $\frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))}$ .

$| z | = \sqrt{0 + \frac{\cos^{2} (t)}{{(\sin (t) (\frac{1}{\sin (t)} - \sin (t)))}^{2}}}$

Apply the product rule to $\sin (t) (\frac{1}{\sin (t)} - \sin (t))$ .

$| z | = \sqrt{0 + \frac{\cos^{2} (t)}{\sin^{2} (t) {(\frac{1}{\sin (t)} - \sin (t))}^{2}}}$

Add $0$ and $\frac{\cos^{2} (t)}{\sin^{2} (t) {(\frac{1}{\sin (t)} - \sin (t))}^{2}}$ .

$| z | = \sqrt{\frac{\cos^{2} (t)}{\sin^{2} (t) {(\frac{1}{\sin (t)} - \sin (t))}^{2}}}$

Rewrite $\sin^{2} (t) {(\frac{1}{\sin (t)} - \sin (t))}^{2}$ as ${(\sin (t) (\frac{1}{\sin (t)} - \sin (t)))}^{2}$ .

$| z | = \sqrt{\frac{\cos^{2} (t)}{{(\sin (t) (\frac{1}{\sin (t)} - \sin (t)))}^{2}}}$

Rewrite $\frac{\cos^{2} (t)}{{(\sin (t) (\frac{1}{\sin (t)} - \sin (t)))}^{2}}$ as ${(\frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))})}^{2}$ .

$| z | = \sqrt{{(\frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))})}^{2}}$

Pull terms out from under the radical, assuming positive real numbers.

$| z | = \frac{\cos (t)}{\sin (t) (\frac{1}{\sin (t)} - \sin (t))}$

Separate fractions.

$| z | = \frac{1}{\frac{1}{\sin (t)} - \sin (t)} \cdot \frac{\cos (t)}{\sin (t)}$

Convert from $\frac{\cos (t)}{\sin (t)}$ to $\cot (t)$ .

$| z | = \frac{1}{\frac{1}{\sin (t)} - \sin (t)} \cdot \cot (t)$

Convert from $\frac{1}{\sin (t)}$ to $\csc (t)$ .

$| z | = \frac{1}{\csc (t) - \sin (t)} \cdot \cot (t)$

Combine $\frac{1}{\csc (t) - \sin (t)}$ and $\cot (t)$ .

$| z | = \frac{\cot (t)}{\csc (t) - \sin (t)}$

The angle of the point on the complex plane is the inverse tangent of the complex portion over the real portion.

$θ = \arctan (\frac{0}{\frac{\cot (t)}{\csc (t) - \sin (t)}})$

Substitute the values of $θ = \arctan (\frac{0}{\frac{\cot (t)}{\csc (t) - \sin (t)}})$ and $| z | = \frac{\cot (t)}{\csc (t) - \sin (t)}$ .

$\frac{\cot (t)}{(\csc (t) - \sin (t)) (\cos (\arctan (\frac{0}{\frac{\cot (t)}{\csc (t) - \sin (t)}})) + i \sin (\arctan (\frac{0}{\frac{\cot (t)}{\csc (t) - \sin (t)}})))}$

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