Radians are superior. We always use radians when doing calculus because it makes differentiation and integration much easier. The numerical integration rules follow the same logic because of convention.

Reply 4

WillNegForReps

is it wrong to do it in degrees? i just done the june 2012 Q1 and it only accepted the radians in the mark scheme

Reply 5

username1560589

Original post by WillNegForReps

is it wrong to do it in degrees? i just done the june 2012 Q1 and it only accepted the radians in the mark scheme

Yes.

Reply 6

davros

Original post by WillNegForReps

is it wrong to do it in degrees? i just done the june 2012 Q1 and it only accepted the radians in the mark scheme

Yes.

Your teacher should have explained that the rules for differentiating and integrating trig functions only work if the angle is assumed to be in radians. Therefore, if you're trying to estimate an integral your method of estimation needs to use the same measure of angles, otherwise you're estimating the wrong thing!