This world is a part of the circle of life.

He won the primary award in the contest.

I am solving a problem to find the value of the tangent, which is one of the trigonometric functions.

Every day, I make sure to set aside time to read the Bible.

He is always in the best of spirits, making those around him happy.

He read the oath and swore to keep his promise.

He copied out the letter.

My grandfather dedicated his life to the silk industry.

My father has been working as a silk manufacturer for many years.

This problem requires the calculation of the tangent.