TrigonometryHigh School
Degrees to Radians
radians = degrees × π / 180
Convert an angle from degrees to radians
1 variableSolve
TrigonometryHigh School
Radians to Degrees
degrees = radians × 180 / π
Convert an angle from radians to degrees
1 variableSolve
TrigonometryHigh School
Sin Cos Tan Calculator
sin θ, cos θ, tan θ
Find the sine, cosine and tangent of an angle in degrees
1 variableSolve
TrigonometryHigh School
Sine Rule
a/sin(A) = b/sin(B)
Solve triangles using the sine rule
3 variablesSolve
TrigonometryHigh School
Cosine Rule
c² = a² + b² - 2ab cos(C)
Find the length of a side using the cosine rule
3 variablesSolve
TrigonometryHigh School
Law of Cosines
c² = a² + b² - 2ab cos(C)
Find the third side of any triangle
3 variablesSolve
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TrigonometryHigh School
Inverse Trig Calculator
θ = sin⁻¹(x), cos⁻¹(x), tan⁻¹(x)
Find the angle in degrees from a trigonometric ratio
1 variableSolve
TrigonometryHigh School
Double Angle Formula (Sine)
sin 2θ = 2 sin θ cos θ
Calculate the sine of a doubled angle
1 variableSolve
TrigonometryHigh School
Double Angle Formula (Cosine)
cos 2θ = cos²θ - sin²θ
Calculate the cosine of a doubled angle
1 variableSolve
TrigonometryHigh School
Area of Triangle (SAS)
A = ½ab·sin(C)
Find a triangle's area from two sides and the angle between them
3 variablesSolve
