Trigonometric Unit Circle Chart

Trigonometric Unit Circle Chart

Trigonometric Unit Circle Chart

A graphical representation of the unit circle for government exams, showing angles, sin, cos values, and quadrants.

Key Trigonometric Identities

Identity Formula
Pythagorean sin²θ + cos²θ = 1
Rearranged sin²θ = 1 - cos²θ
Rearranged cos²θ = 1 - sin²θ
Note sin²θ - 1 = -cos²θ (corrected from user query)

Quadrant Signs

Quadrant sin θ cos θ tan θ
I (0°-90°) + + +
II (90°-180°) + - -
III (180°-270°) - - +
IV (270°-360°) - + -

Note: The unit circle plots (cos θ, sin θ) for key angles. Use this to visualize trigonometric values and quadrant signs for government exam preparation.

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