Question

Equation or special characters

Answer 1

Inverse table.

- What undoes sine?

writen as:

$\sin ^{-1}$

called: inverse sine

also called: arcsine

- What undoes cosine?

written as

$\cos ^{-1}$

called: inverse cosine

also called: arccosine

- What undoes tangent?

written as

$\tan ^{-1}$

called: inverse tangent

also called: arctangent

Table of sine, cosine, tangent for 30, 45 and 60 degrees.