Unit Circle Precal Flashcards
When (x>y)
Radians = ?
Pi / 6
When (x=y)
Radians = ?
Pi / 4
When (x<y)
Radians = ?
Pi / 3
When on X-Axis
Radians = ?
Pi / 2
When on Y-Axis
Radians = ?
Pi / 1
Radian = Pi / 6
Unit Circle = ?
x = square 3 / 2
y = 1 / 2
Radian = Pi / 4
Unit Circle = ?
x and y = square 2 / 2
Radian = Pi / 3
Unit Circle = ?
x = 1 / 2
y = square 3 / 2
Radian = Pi / 2
Unit Circle = ?
x = 1
y = 0
Radian = Pi / 1
Unit Circle = ?
x = 0
y = 1
When (x>y)
Unit Circle = ?
x = square 3 / 2
y = 1 / 2
When (x=y)
Unit Circle = ?
x and y = square 2 / 2
When (x<y)
Unit Circle = ?
x = 1 / 2
y = square 3 / 2
When X-Axis
Unit Circle = ?
x = 1
y = 0
When Y-Axis
Unit Circle = ?
x = 0
y = 1
SohCahToa via Unit Circle
Cos = x
Sin = y
Tan = y / x
Radius via Unit Circle
r (cos) = x
r (sin) = y
cos or sin is unit circle
x y is the point
Sine Graph Startpoint
On the midline
Cosine Graph Startpoint
At the maximum
Cos (pi)
1
Sin (pi)
0
Tan (pi)
0
Cos (pi / 2)
0
Sin (pi / 2)
1
Tan (pi / 2)
0
Cos (pi / 3)
1/2
Sin (pi / 3)
Square root 3 / 2
Tan (pi / 3)
Square root 3 / 3
Cos (pi / 4)
Square root 2 / 2
Sin (pi / 4)
Square root 2 / 2
Tan (pi / 4)
1
Cos (pi / 6)
Square root 3 / 2
Sin (pi / 6)
1/2
Tan (pi / 6)
Square root 3
