Trigonometry Flashcards
What is does SSS prove???
congruent
What is does AAA prove???
Similar
What is does SAS prove???
congruent
What is does ASA prove???
congruent
What is does RHS prove???
congruent
What law do we use for SSS???
cosine
What law do we use for SAS???
cosine
What law do we use for ASA???
sine
What is Pythagoras theorem???
a²+b²=c²
What ratio can we use to help with Pythagoras???
3a:4b:5c
What does sine equal???
opposite/hypotenuse
What does cosine equal???
adjacent/hypotenuse
What does tangent equal???
opposite/adjacent
Whats the law of sine to find sides???
SinA/a=SinB/b=SinC/c
Whats the law of sine to find angles???
a/SinA=b/SinB=c/SinC
Whats the law of cosine to find sides???
a²=b²+c²-2bcosA
Whats the law of cosine to find angles???
cosB=a²+c²-b²/2ac
What is does SSA prove???
not similar
What law do we use for SSA???
sine
What do we use to find the area of a triangle (not right angle)???
area=1/2absinC
Whats sin(0)???
0
Whats sin(30)???
1/2
Whats sin(45)???
√2/2
Whats sin(60)???
√3/2
Whats sin(90)???
1
Whats cos(0)???
1
Whats cos(30)???
√3/2
Whats cos(45)???
√2/2
Whats cos(60)???
1/2
Whats cos(90)???
0
Whats tan(0)???
0
Whats tan(30)???
1/√3
Whats tan(45)???
1
Whats tan(60)???
√3
Whats tan(90)???
0
