# Homework Help: Need help with a trigonometric expression

1. Dec 29, 2017

• Member warned that posts must include an effort
1. The problem statement, all variables and given/known data
Just a simple problem, I need to take the expression$\frac 1 2 (sin(2x)+1)$ and show it is equivalent to $sin^2(x+\frac \pi 4)$, and I cant seem to manage to find the way to do so, so I would appreciate some insight.

2. Relevant equations
N/A

3. The attempt at a solution
Effectively messing around with the trigonometric identities to no avail.

2. Dec 29, 2017

### BvU

You will need some relevant equations... N/A doesn't get you any further

And 'dunno' doesn't qualify as an attempt at solution.

3. Dec 29, 2017

### BvU

I do intend to help you with this really very simple problem, but I have to adhere to the rules (see PF guidelines ).
For starters: what do you get when you write out both in terms of $\ \sin x\$ and $\ \cos x \$ ?

4. Dec 29, 2017