Paper 2 Flashcards
1
Q
when using the area of a sector formula
A
the angle has to be in radians (2/9 pi)
2
Q
the area of the sector
A
8.73cm
3
Q
the solutions to 5sin2theta = 9tantheta
A
-180, -161.6, -18.4, 0, 18.4, 161.6, 180
4
Q
what is the smallest positive solution?
A
6.6
5
Q
cos2A
A
2cos^2A - 1
6
Q
1 - cos3x = sin^2x
A
-90, 0, 90, 138.6
7
Q
area of the badge
A
18.0
8
Q
perimeter of the badge
A
19.6
9
Q
Rcos(x-a)
A
root 17cos(x-1.326)
10
Q
minimum
A
337cm
11
Q
t =
A
6.09
12
Q
co-ordinates
A
(5root2, -4)
13
Q
explaining there is only one root
A
number of roots = number of intersectons vewee lines
14
Q
a =
A
-2 + root5
