**What is sin^2 3x+cos^2 3x?**

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## Question “What is sin^2 3x+cos^2 3x?”

What is sin^2 3x+cos^2 3x?

## Answer

### Answer 1

Please refer to the following.

####
Explanation:

**identity** that is true for everyone

Let’s try it: using values

But, before that as

And

=

*_**_**_**_***_**

We now have proof

Hence

=

=

=

=

=

### Answer 2

Start with the trig identity

This identity is variable x. Therefore, we can substitute x with another variable X = 3. Therefore:

## Conclusion

Above is the solution for “**What is sin^2 3x+cos^2 3x?**“. We hope that you find a good answer and gain the knowledge about this topic of **trigonometry**.