\(sin\dfrac{129\pi}{4}=sin\dfrac{128\pi}{4}+sin\dfrac{\pi}{4}\\ =sin32\pi+sin\dfrac{\pi}{4}=sin\dfrac{\pi}{4}\)

Hoc24 ngày càng cải tiến phát triển nhỉ=)

Chúc mọi người buổi tối vui vẻ tốt lành nee:D

\(5^3=125\\ 3^5=243\)

Vì `125<243` nên:

`5^3<3^5`

I was studying for my exams.

My grandmother/grandfather were watching their favorite TV show.

My mother was preparing dinner in the kitchen.

My father was working late at the office.

My sister/brother was playing video games in their room.