The calculation of arccosine is a part of trigonometry.

Calculating the arctangent, which is one of the trigonometric functions, is difficult.

He cherishes his family.

This sink is old-fashioned, and the design is wonderful.

She saw through his lie at a glance.

He solved the problem at a glance.

He values martial ethics and always strives for a fair fight.

The Showa Genroku era was a symbol of peace and prosperity.

My grandmother makes the best kuchen.

Candied sweet potato is one of my favorite sweets.