Can somebody explain Q5 ii) to me, please?
Why do we have to use 1-cos 2 theta/2? Why can't we just put the limits in the original 2sin^2theta to solve this?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_32.pdf
Why do we have to use 1-cos 2 theta/2? Why can't we just put the limits in the original 2sin^2theta to solve this?
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_32.pdf