KnowraTrigonometric functionsLinked fromLinked fromThe 25 pages that link to Trigonometric functions, each with the reason it gives.All 25Broader topic 2Related 7Narrower topic 12Compared with 4Right triangleNarrower topic: Sine, cosine, and tangent encode ratios of this triangle’s sides.SineNarrower topic: Sine belongs to this family alongside cosine and tangent.Unit circleNarrower topic: The unit circle provides a geometric definition of their values for all real angles.Small-angle approximationNarrower topic: Tangent belongs to this family, whose angle conventions determine the approximation.Euler's identityNarrower topic: Euler's formula connects these functions directly to complex exponentials.Slide ruleNarrower topic: Sine, cosine, and tangent scales let slide rules evaluate common angle calculations.Polar formNarrower topic: Sine and cosine express the angle's direction as real and imaginary components.Spherical law of cosinesNarrower topic: Sine and cosine encode the sides and angles in the spherical formula.Bretschneider's formulaNarrower topic: The angular correction is expressed through a cosine of opposite-angle sum.Madhava of SangamagramaNarrower topic: His best-known series express sine, cosine, and arctangent.Pythagorean trigonometric identityNarrower topic: The identity is a relation among particular trigonometric functions.Mollweide's formulaNarrower topic: The identities express triangle measurements through the tangent function.