Algebra Examples

$\cos (0) \cdot \tan (0) = \sin (0)$

Step 1

Rewrite in terms of sines and cosines, then cancel the common factors.

Tap for more steps...

Step 1.1

Reorder $\cos (0)$ and $\tan (0)$ .

$\tan (0) \cdot \cos (0) = \sin (0)$

Step 1.2

Rewrite $\cos (0) \cdot \tan (0)$ in terms of sines and cosines.

$\frac{\sin (0)}{\cos (0)} \cos (0) = \sin (0)$

Step 1.3

Cancel the common factors.

$\sin (0) = \sin (0)$

Step 2

The exact value of $\sin (0)$ is $0$ .

$0 = \sin (0)$

Step 3

The exact value of $\sin (0)$ is $0$ .

$0 = 0$

Step 4

Since the two sides have been shown to be equivalent, the equation is an identity.

$\cos (0) \cdot \tan (0) = \sin (0)$ is an identity.