Is cot(x)=(sin(2x))/(1-cos(x^2)) ?

The answer to whether cot(x)=(sin(2x))/(1-cos(x^2)) is False

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

prove cot(x)=(sin(2x))/(1-cos(x^2))

prove

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

False

Solution steps

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

Show that the two sides are not equal

For

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

plug in

x = 1

cot (1) = 0.64209 \dots

cot (1)

Refine to a decimal form

= 0.64209 \dots

\frac{sin ( 2 \cdot 1 )}{1 - cos ( 1 ^{2} )} = 1.97803 \dots

\frac{sin ( 2 \cdot 1 )}{1 - cos ( 1 ^{2} )}

Refine to a decimal form

= 1.97803 \dots

The two sides are not equal

\Rightarrow False

Is cot(x)=(sin(2x))/(1-cos(x^2)) ?
The answer to whether cot(x)=(sin(2x))/(1-cos(x^2)) is False