# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2010 | May-Jun | (P2-9709/21) | Q#8

Question i. By differentiating , show that if y = cot x then ii. By expressing in terms of and using the result of part (i), show that iii. Express cos 2x in terms of sin2 x and hence show that can be expressed as . Hence using the […]