The calculation of the coversine is an important part of trigonometry.

In order to calculate the value of the cotangent, you need to divide the length of the adjacent side of a right triangle by the length of the opposite side.

He gifted her a platinum necklace.

The number of white blood cells is exceeding the normal range.

This leaf has a very beautiful color, doesn't it?

He sent me a letter.

He is learning how to hack the computer security system.

He is learning how to hack a computer system.

In this area, rock blasting is being carried out to cut through the mountain.

This banned book is deemed illegal by the government.