Radian Flashcards
1
Q
What is a radian?
A
the angle subtended at the centre of circle by an arc whose length is equal to the radius of a circle.
2
Q
What is 30 degrees in radians?
A
pie/6
3
Q
What is 60 degrees in radians?
A
pie/3
4
Q
What is 90 degrees in radians?
A
pie/2
5
Q
What is 180 degrees in radians?
A
pie
6
Q
What is 45 degrees in radians?
A
pie/4
7
Q
What is 360 degrees in radians?
A
2 pie
8
Q
What is sin π/6
A
½
9
Q
What is cos π/6?
A
√3/2
10
Q
What is tan π/6?
A
√3/3
11
Q
What is sin π/3?
A
√3/2
12
Q
What is cos π/3?
A
½
13
Q
What is tan π/3?
A
√3
14
Q
What is tan π/4?
A
1
15
Q
What is sin π/4?
A
√2/2
