How do you express 45 degrees in radian in term of pi? Trigonometry Graphing Trigonometric Functions Radian Measure 1 Answer Gió Sep 19, 2015 #pi/4# Explanation: Consider that #pi# rad corresponds to #180°#. So #45°# is #(180°)/4# or #pi/4#. Answer link Related questions What is Radian Measure? How do you find the radian measure of an angle? How do you find the radian measure of an angle of 280? How do you convert radian measures to degrees? What is the radian measure of 270 degrees? What is the radian measure of 72 degrees? What is the radian measure of a right angle? How do you find #tan (pi/3)#? How do you express #(11pi)/12# in degrees? How do you convert #-450^@# into radians? See all questions in Radian Measure Impact of this question 32721 views around the world You can reuse this answer Creative Commons License