The chapters are about trigonometric which is the most difficult part for me.
I learned trigonometric about 5years ago when I was a high school student.
I disliked it, and did not study hard enough.
After all, I had to learn it again in the US, but it was still challenge
I don't know that somebody meant in fun to solve the questions.
That's funny. Well done Peter!! :)
1 comment:
O~.....wait what is that?
looks hard
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