AS Maths Flashcards
1
Q
The sum of an arithmetic sequence:
A) Sn =n/2(a1 +an)
B) Sn =n/2 (2a +d(n-1))
C) Sn =a + d(n-1)
A
A&B
2
Q
Sum of the first n terms of a geometric series?
A) a + d(n-1)
B) a(1-r^n)/1-r
C) a/1-r
A
B
3
Q
a/1-r
A) Sum to infinity geometric series
B) Sum to n, arithmetic series
C) First term of a geometric series
A
A
4
Q
Loga + logb =
A) logab
B) loga/b
C) loga^b
A
A
5
Q
If the gradient of a straight line =m, The gradient of the perpendicular =
A) m
B) -m
C) -1/m
A
C
6
Q
The area of a triangle
A) absinC
B) 1/2 absinC
C) 1/2mg^2
A
B
7
Q
a/sinA =b/sinB
What is this rule?
A
Sin rule
8
Q
Cosine rule
A) ab +1/2cos(C)
B) cosA= (b2+c2-a2)/2bc
C) cosA = sinB -sinC
A
B
9
Q
sin30
A
1/2
10
Q
Cos30
A
Root(3)/2
11
Q
Tan30
A
1/root(3)
12
Q
Sin45 or cos45
A
1/root(2)
13
Q
Tan45
A
1
14
Q
Sin60
A
Root(3)/2
15
Q
Cos60
A
1/2
