Cofunction Calculator

Free Cofunction Calculator - Calculates the cofunction of the 6 trig functions: * sin
* cos
* tan
* csc
* sec
* cot

This calculator has 1 input.

sin(θ) = cos(90 - θ)
cos(θ) = sin(90 - θ)
tan(θ) = cot(90 - θ)
csc(θ) = sec(90 - θ)
sec(θ) = csc(90 - θ)
cot(θ) = tan(90 - θ)

angle: the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.
cofunction: trigonometric identities that show the relationship between trigonometric ratios pairwise (sine and cosine, tangent and cotangent, secant and cosecant).
cos: cos(θ) is the ratio of the adjacent side of angle θ to the hypotenuse
cot: The length of the adjacent side divided by the length of the side opposite the angle. Also equals 1/tan(θ)
csc: the length of the hypotenuse divided by the length of the adjacent side. Also equals 1/sin(θ)
gradian: defined as one hundredth of the right angle. This is equal to π/200 or 9/10°
measurement: the size, length, or amount of something, as established by measuring.
radian: a unit of plane angular measurement that is equal to the angle at the center of a circle subtended by an arc whose length equals the radius or approximately 180°/π ~ 57.3 degrees.
sec: the length of the hypotenuse divided by the length of the adjacent side. Also equals 1/cos(θ)
sin: sin(θ) is the ratio of the opposite side of angle θ to the hypotenuse
tan: the ratio of the opposite side to the adjacent side of a particular angle of the right triangle.

Cofunction Calculator Video