Answer:
<h2>-1</h2>
Step-by-step explanation:

<u>Sin is -sqrt 2/2 cos is sqrt2/2 and tan is -1</u>
I’ll help comment the questions and I’ll answer
The solution is (-2,4) she right both have the same solution because if you solve both of them you will get (-2,4)
Pi is an irrational number meaning it has no end, 3.14 is just an estimate which means that it is not accurate.