YOU SAID:
I'm in trigonometry and it's so boring
INTO JAPANESE
私は三角法をしています、そしてそれはとても退屈です
BACK INTO ENGLISH
I am doing trigonometry, and that is very boring
INTO JAPANESE
私は三角法をやっています、そしてそれは非常に退屈です
BACK INTO ENGLISH
I am doing trigonometry, and that is very boring
You've done this before, haven't you.