8.1 Trig Ratios and Special Triangles Flashcards
1
Q
definition of sine
A
OH
opposite/hypotenuse
2
Q
definition of cosine
A
AH
adjacent/hypotenuse
3
Q
definition of tangent
A
OA
opposite/adjacent
4
Q
definition of cosecant
A
HO
hypotenuse/opposite
5
Q
definition of secant
A
HA
hypotenuse/adjacent
6
Q
definition of cotangent
A
AO
adjacent/opposite
7
Q
sin 30°
A
1/2
8
Q
sin 45°
A
1/√2 or √2/2
9
Q
sin 60°
A
√3/2
10
Q
cos 30°
A
√3/2
11
Q
cos 45°
A
1/√2 or √2/2
12
Q
cos 60°
A
1/2
13
Q
tan 30°
A
1/√3
14
Q
tan 45°
A
1
15
Q
tan 60°
A
√3
