Please calculate the value of the cotangent, which is one of the trigonometric functions.

This math problem requires an understanding of functions.

He calculated the area of the triangle.

He was able to solve the complex calculation quickly.

He was calculating in his head.

How much is the price of this product?

He is deserving of that award.

This is my first question.

He was promoted to Senior Fourth Rank.

My family is exactly five people.