Trigonometry Of Acute And Right Triangles Flashcards
1
Q
What is CAH?
A
Cos0= adj
——
hyp
2
Q
What is TOA?
A
Tan0= opp
——
adj
3
Q
Similar triangle…
A
Corresponding angles are equal, and corresponding side lengths are equal. Proven by (sss), (sas), or (aa).
4
Q
What is the sine law?
A
a b c
— — = — — = — —
Sin A Sin B Sin C
5
Q
What is the cosine law?
A
a2 = b2+c2 - 2bc (Cos A)
6
Q
What is SOH
A
Sin0= opp
——
hyp
7
Q
sine law is used for?
A
If an unknown side and if two angles and a side are known or
An unknown angle and if two sides and the angle opposite is known.
8
Q
Cosine law is used when?
A
If you have two sides lengths and their contained angle are known or you have all 3 side lengths.
