Question

Write the trigonometric expression in terms of sine and cosine, and then simplify. sin(u) cos(u) cot(u)

Answer 1

`\cos^2(u)`

Explanation:

A trigonometry is a branch of mathematics that explain the relationship between the sides and the angles of the triangle.

Hipparchus was the one who makes a table regarding values for a trigonometric function.

It used to measure the distance between landmarks and the distance of nearby stars.

Use
`\cot(u)=(\cos(u))/(\sin(u))`

`\sin(u)\,\cos(u)\,\cot(u)=\sin(u)\,\cos(u)\,(\cos(u))/(\sin(u))=\cos^2(u)`