# Does #tan300-tan30=tan270#?

##### 2 Answers

NO. See explanation below

#### Explanation:

We know that

In goniometric circle we see that 270 does not have tangent value. But let use tangent of diference to demonstrate analitically...

We know also that

Lets check the formula in our case

And identity proposed will be thrue if

Lets see:

That means

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#### Explanation:

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In fact,