Do I lose mark for an extra trig solution (1 Viewer)

[WeiWeiMan]

I have looked through solutions for 2023 hsc extension 1 and have realised that I got an extra solution for:
Sinx + cosx = 1
I used t formula to solve this and tested pi and somehow thought it was equal to 1. Do I lose marks for this if my other values given were the correct ones besides pi. If I lose marks, is it just 1

 

[Life'sHard]

I’m pretty sure you’ll lose 1 mark for the “solution” criteria but should receive all the marks for the working.

 

[WeiWeiMan]

I’m pretty sure you’ll lose 1 mark for the “solution” criteria but should receive all the marks for the working.

Damnitw