Edexcel Mathematics Specimen paper · Paper 2 · Question 13 · ExamRizz

ExamRizzEdexcel MathematicsMathematics

Specimen paper · Paper 2 · Question 13 · 10 marks

13. (a) Show that cosec 2x + cot 2x ≡ cot x, x ≠ 90n°, n ∈  (5) (b) Hence, or otherwise, solve, for 0  θ < 180°, cosec(4θ + 10°) + cot(4θ + 10°) = 3 You must show your working. (Solutions based entirely on graphical or numerical methods are not acceptable.)

Lesson: Definitions of Sine, Cosine and Tangent and Exact Values