To Convert Degrees to Radians we use the formula given below
Angle in radian = Angle in degree x (π/180)
90 degrees to radians
Given, 90 degrees is the angle
Angle in radian = Angle in degree x (π/180)
= 90 x (π/180)
= π/2
Hence, 90 degrees is equal to π/2 in radian.