He believes in psychic phenomena.

The calculation of arccosine is a part of trigonometry.

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

The calculation of arcsine is a part of trigonometry.

The calculation of the arccotangent is a part of trigonometry.

Fergus is my best friend.

This factory has significantly reduced its carbon dioxide emissions.

Fougasse is one of my favorite types of bread.

The police used tear gas against the demonstrators.

We need to replace the gasket of this engine.