| Exam Board | Edexcel |
|---|
| Module | C2 (Core Mathematics 2) |
|---|
| Topic | Trig Equations |
|---|
5. (a) Given that
$$8 \tan x - 3 \cos x = 0$$
show that
$$3 \sin ^ { 2 } x + 8 \sin x - 3 = 0 .$$
(b) Find, to 2 decimal places, the values of \(x\) in the interval \(0 \leq x \leq 2 \pi\) such that
$$8 \tan x - 3 \cos x = 0 .$$