Simplify sin(20)

Problem

sin(20^∘)

Solution

1. Identify the expression as the sine of an angle measured in degrees.

2. Determine if the angle is a standard reference angle (such as 0^∘ 30^∘ 45^∘ 60^∘ or 90^∘.

3. Conclude that since 20^∘ is not a standard reference angle, the expression sin(20^∘) is already in its simplest exact radical form.

4. Provide the decimal approximation if required, though the exact form remains sin(20^∘)

Final Answer

sin(20^∘)=sin(20^∘)

Want more problems? Check here!