Is (1-cos(2x))/(1+cos(2x))=tan^2(x) ?

The answer to whether (1-cos(2x))/(1+cos(2x))=tan^2(x) is True

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

prove (1-cos(2x))/(1+cos(2x))=tan^2(x)

prove

\frac{1 - cos ( 2 x )}{1 + cos ( 2 x )} = tan^{2} (x)

True

Solution steps

\frac{1 - cos ( 2 x )}{1 + cos ( 2 x )} = tan^{2} (x)

Manipulating left side

\frac{1 - cos ( 2 x )}{1 + cos ( 2 x )}

Rewrite using trig identities

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

Rewrite using trig identities

tan^{2} (x)

We showed that the two sides could take the same form

\Rightarrow True

tan^{2} (\frac{θ}{2}) = \frac{sec ( θ ) - 1}{sec ( θ ) + 1}

\frac{sec ( x )}{tan ( x )} = csc (x)

\frac{1 - sin ( v )}{cos ( v )} + \frac{cos ( v )}{1 - sin ( v )} = 2 sec (v)

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

sec (x) = \frac{1 + csc ( x )}{cot ( x ) + cos ( x )}

Is (1-cos(2x))/(1+cos(2x))=tan^2(x) ?
The answer to whether (1-cos(2x))/(1+cos(2x))=tan^2(x) is True