1 Answer

Nsave · Answer 1 · 2021-02-24T14:57:14+0000

Answer:

$\cos^2(u)$

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
$\cot(u)=(\cos(u))/(\sin(u))$

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

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