Trigonometry (6) Flashcards
1
Q
sin45
A
1/¬2
2
Q
cos45
A
1/¬2
3
Q
tan45
A
1
4
Q
sin30
A
1/2
5
Q
cos30
A
¬3/2
6
Q
tan30
A
1/¬3
7
Q
sin60
A
¬3/2
8
Q
cos60
A
1/2
9
Q
tan60
A
¬3
10
Q
Find an obtuse angle using the ambiguous case
A
sin pheta = sin(180 - pheta)
11
Q
Solve sine equations
A
180 - pheta
Then keep adding 360 to pheta
12
Q
Solve cosine equations
A
360 - pheta
Then keep adding 360 to pheta
13
Q
How to change sine to cos
A
sin(90 - pheta) = cos
14
Q
How to change cos to sine
A
cos(90 - pheta) = sin
