Linked from

The 11 pages that link to Tangent, each with the reason it gives.

• Right triangleBroader topic: It expresses the slope-like ratio between the legs at an acute angle.

• SineRelated: Its ratio definition depends directly on sine and cosine.

• Trigonometric functionsBroader topic: Its quotient definition explains its poles and shorter period.

• TrigonometryBroader topic: It expresses the opposite-to-adjacent side ratio.

• Unit circleRelated: Unit-circle coordinates give tan θ as the ratio of vertical to horizontal position.

• CosineCompared with: Unlike cosine, tangent has vertical asymptotes and is not defined at every angle.

• Inverse trigonometric functionsRelated: Arctangent inverts tangent on a branch where tangent is one-to-one.

• Trigonometric identityRelated: Its quotient definition lets many identities be derived from sine and cosine.

• Sine and cosineCompared with: Unlike sine and cosine, tangent is unbounded and has vertical asymptotes.

• Range of a functionBroader topic: Unlike sine, tangent attains every real value despite being undefined at regular inputs.

• Law of cotangentsRelated: Cotangent is its reciprocal, and tangent addition provides a proof.