Question

express the angle in radian measure 75°and -270°

Answer 1

as 180 degree equals 3.14 radiant..solve by unity method now..for - 270 subtract it from 360 and it gives +90...solve now... since 180 degree equals to 3.14 radians , so 75 degree equals to (3.14÷180) × 75= 1.30833 rad and -279=90 which will be equal to (3.14÷180)×90=1.5699 radians

Answer 2

As π rad=180°

75°= π X (75/180)=5π/12
-270° = -π x (270/180)= -3π/2