Skip to content

Course home

Sign up

Trigonometric Identities and Equations

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190
Question 138

Find all solutions of

6cos⁡2x+5sin⁡x−7=0 6\cos^2 x + 5\sin x - 7 = 0 6cos2x+5sinx−7=0

where 0∘≤x<k∘ 0^\circ \leq x < k^\circ\,0∘≤x<k∘ and k k\,k is a positive integer multiple of 360.

Give your solutions to the nearest degree, in terms of kkk.

[5]
Markscheme

Trigonometric Identities and Equations Questions

  1. A Level
  2. /Maths
  3. /Trigonometric Identities and Equations

322 exam-style questions on Edexcel A Level Maths Trigonometric Identities and Equations, covering 10.1 Angles in all four Quadrants, 10.2 Exact Values of Trigonometric Ratios, 10.3 Trigonometric Identities, 10.4 Solving Trigonometric Equations, 10.5 Harder Trigonometric Equations, and 10.6 Equations and Identities. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank