Is 1/(sin(x))-sin(x)=cot(x)cos(x) ?

The answer to whether 1/(sin(x))-sin(x)=cot(x)cos(x) is True

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prove 1/(sin(x))-sin(x)=cot(x)cos(x)

prove

\frac{1}{sin ( x )} - sin (x) = cot (x) cos (x)

True

Solution steps

\frac{1}{sin ( x )} - sin (x) = cot (x) cos (x)

Manipulating right side

cot (x) cos (x)

Express with sin, cos

cos (x) cot (x)

Use the basic trigonometric identity:

cot (x) = \frac{cos ( x )}{sin ( x )}

= cos (x) \frac{cos ( x )}{sin ( x )}

Simplify

cos (x) \frac{cos ( x )}{sin ( x )} : \frac{cos ^{2} ( x )}{sin ( x )}

cos (x) \frac{cos ( x )}{sin ( x )}

Multiply fractions:

a \cdot \frac{b}{c} = \frac{a \cdot b}{c}

= \frac{cos ( x ) cos ( x )}{sin ( x )}

cos (x) cos (x) = cos^{2} (x)

cos (x) cos (x)

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

cos (x) cos (x) = cos^{1 + 1} (x)

= cos^{1 + 1} (x)

Add the numbers:

1 + 1 = 2

= cos^{2} (x)

= \frac{cos ^{2} ( x )}{sin ( x )}

= \frac{cos ^{2} ( x )}{sin ( x )}

= \frac{cos ^{2} ( x )}{sin ( x )}

Rewrite using trig identities

\frac{cos ^{2} ( x )}{sin ( x )}

Use the Pythagorean identity:

cos^{2} (x) + sin^{2} (x) = 1

cos^{2} (x) = 1 - sin^{2} (x)

= \frac{1 - sin ^{2} ( x )}{sin ( x )}

= \frac{1 - sin ^{2} ( x )}{sin ( x )}

Expand

\frac{1 - sin ^{2} ( x )}{sin ( x )} : \frac{1}{sin ( x )} - sin (x)

\frac{1 - sin ^{2} ( x )}{sin ( x )}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{1 - sin ^{2} ( x )}{sin ( x )} = \frac{1}{sin ( x )} - \frac{sin ^{2} ( x )}{sin ( x )}

= \frac{1}{sin ( x )} - \frac{sin ^{2} ( x )}{sin ( x )}

Cancel

\frac{sin ^{2} ( x )}{sin ( x )} : sin (x)

\frac{sin ^{2} ( x )}{sin ( x )}

Cancel the common factor:

sin (x)

= sin (x)

= \frac{1}{sin ( x )} - sin (x)

= \frac{1}{sin ( x )} - sin (x)

We showed that the two sides could take the same form

\Rightarrow True

sin (3 x) = 3 sin (x) - 4 (sin (x))^{3}

(5 sin (θ) - 5 cos (θ))^{2} = 25 - 25 sin (2 θ)

\frac{sin ( θ ) - 1}{cos ( θ )} = tan (θ) - sec (θ)

cot (x) \cdot sec (x) = csc (x)

2 - csc^{2} (θ) = 1 - cot^{2} (θ)

Is 1/(sin(x))-sin(x)=cot(x)cos(x) ?
The answer to whether 1/(sin(x))-sin(x)=cot(x)cos(x) is True