Maths question O/N 2012

[therealhamzakhan]

it is Q4b (iv) and (v)
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w12_qp_42.pdf

 

[Catneil]

iv) Angle BDO= 180 - (124 + 34) = 22

v) length of arc = θ/360 × 2π ×radius
=(360 -34)/360 ×2×π×12
=326/360 ×24×π
= 68.3

 

[abood elibiy]

iv) Angle BDO= 180 - (124 + 34) = 22

v) length of arc = θ/360 × 2π ×radius
=(360 -34)/360 ×2×π×12
=326/360 ×24×π
= 68.3

from where did you get the 34 in part iv ? :S and thanks for rest

 

[Omar Haider]

from where did you get the 34 in part iv ? :S and thanks for rest

34 was given in part(iii) of the question.