Hayaka is my best friend.

I learned how to calculate the hacoversine in trigonometry.

There are times when we perform calculations with the haversine in trigonometry.

Time flies like an arrow, a year passed in the blink of an eye.

He solved the problem in a scientific way.

This reaction occurs through a chemical process.

He is good at tactical thinking.

He exercises every day and leads a healthy life.

Fundamental knowledge of mathematics is necessary to solve advanced problems.

This park was completely artificially made.