# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2014 | Oct-Nov | (P1-9709/13) | Q#5

Hits: 488 Question i. Show that . ii. Hence solve the equation for . Solution i. We are given; We choose the left hand side; It can be rewritten as; Utilizing the algebraic formula; Utilizing the trigonometric identity; We can write now; We can rewrite the trigonometric identity as; Therefore; Hence; ii. We […]