Unit Circle Calculator
Find sine, cosine, and tangent values for any given angle using the unit circle. Switch between degrees and radians easily.
About the Unit Circle:
On the unit circle (radius = 1):
x = cos(θ)
y = sin(θ)
tan(θ) = sin(θ) / cos(θ)
At key angles:
0° → (1, 0)
90° → (0, 1)
180° → (−1, 0)
270° → (0, −1)
360° → (1, 0)
The unit circle is a fundamental concept in trigonometry, representing all angles as coordinates (cos θ, sin θ). It helps visualize periodic functions and trigonometric relationships elegantly.