Skip to content
A Level
Find course
Features
Quick links
Open app
A Level
Maths AQA
Question bank
1.8.6 Compound and double angle formulae (A-level only)
Easy
Medium
Hard
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
Question 14
Formula sheet
Calculator
Highlight
Mark as complete
Markscheme
Solve, for
−180≤x≤180-180 \leq x \leq 180
−
180
≤
x
≤
180
, the equation,
2cos2x+7cosx=0 2 \cos 2x + 7 \cos x = 0
2
cos
2
x
+
7
cos
x
=
0
[5]
Write your answer here...
Markscheme
Ask Genie
3
Grade answer
Ask me anything!
1.8.6 Compound and double angle formulae (A-level only) Questions
A Level
/
Maths
/
1.8.6 Compound and double angle formulae (A-level only)
