Trigonometric functions are one of the basic concepts in mathematics.

He is good at solving problems of trigonometric functions.

A transcendental function is a type of function that cannot be expressed as a solution to an algebraic equation.

Algebraic functions are a part of mathematics, and understanding them is important.

The sympathetic nervous system controls the body's stress response.

I'm sorry, but I don't speak Japanese.

I'm a Muslim, so I fast during Ramadan.

She used to be a prostitute, but now she has started a new life.

He was hiding the fact that he was an illegitimate child.

He broke his rib.