Is (cos(2x)-cos(4x))/(sin(2x)sin(4x))=tan(x) ?

The answer to whether (cos(2x)-cos(4x))/(sin(2x)sin(4x))=tan(x) is False

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prove (cos(2x)-cos(4x))/(sin(2x)sin(4x))=tan(x)

prove

\frac{cos ( 2 x ) - cos ( 4 x )}{sin ( 2 x ) sin ( 4 x )} = tan (x)

False

Solution steps

\frac{cos ( 2 x ) - cos ( 4 x )}{sin ( 2 x ) sin ( 4 x )} = tan (x)

Show that the two sides are not equal

For

\frac{cos ( 2 x ) - cos ( 4 x )}{sin ( 2 x ) sin ( 4 x )} = tan (x)

plug in

x = 1

\frac{cos ( 2 \cdot 1 ) - cos ( 4 \cdot 1 )}{sin ( 2 \cdot 1 ) sin ( 4 \cdot 1 )} = - 0.34511 \dots

\frac{cos ( 2 \cdot 1 ) - cos ( 4 \cdot 1 )}{sin ( 2 \cdot 1 ) sin ( 4 \cdot 1 )}

Refine to a decimal form

= - 0.34511 \dots

tan (1) = 1.55740 \dots

tan (1)

Refine to a decimal form

= 1.55740 \dots

The two sides are not equal

\Rightarrow False

Is (cos(2x)-cos(4x))/(sin(2x)sin(4x))=tan(x) ?
The answer to whether (cos(2x)-cos(4x))/(sin(2x)sin(4x))=tan(x) is False