Trigonometry Non-Calculator Essential Knowledge Flashcards
1
Q
sin30
A
1/2
2
Q
sin45
A
1 / √2 or √2 / 2
3
Q
sin60
A
√3 / 2
4
Q
cos30
A
√3 / 2
5
Q
cos45
A
1 / √2 or √2 / 2
6
Q
cos60
A
1/2
7
Q
tan30
A
1 / √3
8
Q
tan45
A
1
9
Q
tan60
A
√3
10
Q
Sine rule for Sides -
A
a/Sin(A) = b/Sin(B) = c/Sin(C)
11
Q
Sine rule for Angles -
A
Sin(A) / a = Sin(B) / b = Sin(C) / c
12
Q
Cosine rule for Sides -
A
a^2 = b^2 + c^2 - 2bcCos(A)
13
Q
Cosine rule for Angles -
A
Cos(A) = (b^2 + c^2 - a^2) / 2bc
