How Well Do You Know Hipparchus?

Hipparchus used trigonometry to calculate the distance from the earth to the moon. Trigonometry is a branch of mathematics that deals with the relationships between the angles and sides of triangles. By measuring the angles and using trigonometric functions such as sine, cosine, and tangent, Hipparchus was able to determine the distance to the moon. This method is still used today in various fields of science and engineering to calculate distances and angles.

Hipparchus was a Greek mathematician and astronomer who made significant contributions to the development of trigonometry. He is often referred to as the "founder of trigonometry" because he was the first to create a table of chords, which was a precursor to the modern trigonometric functions. Hipparchus used these tables to solve problems in astronomy, such as determining the positions and distances of celestial bodies. His work laid the foundation for the study of angles, triangles, and the relationships between them, which is now known as trigonometry.

Hipparchus was a Greek astronomer and mathematician who lived in the 2nd century BC. He made significant contributions to the field of astronomy, including the development of the first comprehensive star catalog and the discovery of the precession of the equinoxes. His nationality is Greek because he was born in Nicaea, which was a part of ancient Greece.

Hipparchus was a renowned mathematician, geographer, and astronomer in ancient Greece. He made significant contributions to the fields of trigonometry and astronomy, including the development of the first known star catalog. However, there is no historical evidence to suggest that he was a physicist. Therefore, the correct answer is physicist.

Hipparchus started his scientific career before 141 BC.

Hipparchus was born in Bythiania, which is now named as Turkey.

Hipparchus lived for 70 years because it is the closest option to "many years" compared to the other given options. The question implies that Hipparchus had a long lifespan, and out of the options provided, 70 is the highest number, indicating a longer life.

Hipparchus measured the distance between the Earth and the Moon.

The correct answer is 127BC because it is the only option that is closer to the present year compared to the other options. The other options are further back in time, so they cannot be the last observation.

Hipparchus is ranked sixth among the world's greatest astronomers.