I used to love the branch of mathematics called Trigonometry back in high school. What about you?
I was kinda good at it but never really knew much about it, What exactly is Trigonometry? 
Trig is a study involving lengths and angles of triangles. It was really fun!
Oh yeah I just needed a refresher, I havent messed with trig since high school. Can you get a job with trigonometry? 
Yup its easy to forget without practice. You can jobs in engineering, music and acoustics, astronomy, ecology, and biology!
Wow really? Id love to get a job in music with trigonometry, But Id think itd be hard. Who invented trig anyways? 
We don't know the exact inventor but we do know that it emerged in the Hellenistic world during the 3rd century BC