1
Q
3 basic trigonometric ratios
A
2
Q
exact cos values you need to know (0, 30, 45, 60, 90)
A
3
Q
exact sine values you need to know (0, 30, 45, 60, 90)
A
(root1/2 root2/2 root3/2…)
4
Q
exact tan values you need to know (0, 30, 45, 60, 90)
A
can just be remembered as sin/cos
5
Q
finding sin/cos/tan 45
A
6
Q
finding sin/cos/tan 60 & 30
A
7
Q
labelling a triangle
A
8
Q
sine rule
A
9
Q
cosine rule
A
10
Q
using cosine rule to find an angle
A
11
Q
what should i use?? sine or cosine rule??
1) i have all 3 sides and no angles
2) i have 2 angles and a opposite side
3) i have 2 sides + angle not enclosed by them
4) i have 2 sides + angle enclosed by them
A
cosine, sine, sine, cosine
12
Q
area of a triangle rule
A
Maths GCSE
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