# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 2 (P2-9709/02) | Year 2013 | May-Jun | (P2-9709/22) | Q#8

Question i. Prove the identity ii. Hence solve the equation For . Solution i. We are required to prove the identity; We know that; Therefore; provided that ii. We are required to solve the equation; From (i) we know that; Therefore; Since , therefore Let ; Now […]