Trigonometry Examples

$2.5 π$

Step 1

Find an angle that is positive, less than $2 π$ , and coterminal with $2.5 π$ .

Tap for more steps...

Step 1.1

Subtract $2 π$ from $2.5 π$ .

$2.5 π - 2 π$

Step 1.2

The resulting angle of $1.57079632$ is positive, less than $2 π$ , and coterminal with $2.5 π$ .

$1.57079632$

Step 2

Since $1.57079632$ is in the first quadrant, the reference angle is $1.57079632$ .

$1.57079632$