Solve sin x = 1

Step by step

The question

Question: solve sin x = 1.

Find every angle from 0° up to 360°.

We want the angles from 0° to 360°: one full turn.

1 Find every angle

Sin is the up value.

The points with the height we want are on a flat line.

The up value is 1 at one point only.

x = 90°.

On the circle: 1 point, so 1 angle.

So x = 90°.

2 Check

Let's check every answer in the equation.

Each one must give 1.

Every answer works.

So x = 90°.

Let's look back.

First: find every angle.

Last: check.