# How do you simplify #tan^4 theta + 2tan^2 theta + 1 #?

##### 1 Answer

Oct 18, 2015

#### Answer:

#### Explanation:

So we can say

However, as we know, from the pythagorean identity

So,

Oct 18, 2015

So we can say

However, as we know, from the pythagorean identity

So,