Trig Flashcards
1
Q
What is the sine rule?
A
a/sinA=b/sinB=c/sinC
2
Q
What’s is the cosine rule
A
a^2=b^2+c^2-2bccosA
3
Q
How to calculate area
A
1/2absinC
4
Q
Tan
A
Sin/cos
5
Q
Secx
A
1/cosx
6
Q
Cosecx
A
1/sinx
7
Q
Cotx
A
1/tanx
8
Q
Sin^2x+cos^2x=
A
1
9
Q
Sec^2x
A
1+tan^2x
10
Q
Cosec^2x
A
1+cot^2x
11
Q
Sin2x
A
2sinxcosx
12
Q
cos2x
A
cos^2x-sin^2x
2cos^2Ø-1
1-2sin^2Ø
13
Q
Tan2x
A
2tanx/1-tan^2x
14
Q
Arc length
A
rØ
15
Q
Sector area
A
1/2 r^2 Ø
