Quick angles:
Sin, Cos, Tan, Cot, Sec, Cosec & inverse functions " degrees & radians
Quick angles:
A trigonometry calculator helps you find missing angles and side lengths of triangles, specifically right-angled triangles. It uses trig functions (sine, cosine, tangent) and their inverses to solve complex geometric problems used in physics, engineering, and architecture.
To remember trigonometric ratios for right triangles, use SOH CAH TOA:
If a right triangle has an angle of 30° and the hypotenuse is 10 meters, what is the length of the opposite side?
sin(30°) = Opposite / 10 → 0.5 = Opposite / 10 → Opposite = 5 meters.
The Pythagorean theorem (a² + b² = c²) applies to right triangles. It states that the square of the hypotenuse is equal to the sum of the squares of the other two sides.
To convert degrees to radians, multiply the degree value by π / 180. For example, 180° × (π/180) = π radians.
Inverse trig functions (arcsin, arccos, arctan) are used to find an angle when you already know the side lengths of a triangle.