How do you determine the quadrant in which 3.5 radians lies?

1 Answer
Jun 14, 2018

3.5 radians lies in quadrant III.

Explanation:

Since we know the measure in degrees of multiples of π2 radians, it would be nice to create an inequality that contains 3.5 radians. We will use the approximation π3.14 and from that it follows that π21.57. Since 3.14<3.5<3.14+1.57, we can write this inequality like this: π<3.5<3π2. Since we know that π radians is equal to 180o and 3π2 radians is equal to 270o, 3.5 radians lies in the third quadrant.