Expand menu menu_open Minimize Start chapters Home History history History expand_more
{{ item.displayTitle }}
navigate_next
No history yet!
Progress & Statistics equalizer Progress expand_more
Student
navigate_next
Teacher
navigate_next
{{ filterOption.label }}
{{ item.displayTitle }}
{{ item.subject.displayTitle }}
arrow_forward
No results
{{ searchError }}
search
menu_open
{{ courseTrack.displayTitle }}
{{ statistics.percent }}% Sign in to view progress
{{ printedBook.courseTrack.name }} {{ printedBook.name }}
search Use offline Tools apps
Login account_circle menu_open

Tangent - Trigonometry

Concept

Tangent

The ratio between the lengths of the opposite side and the adjacent side in a right triangle for a specific angle, is called the tangent of and is written as

Rules Tangent 1.svg

The ratio is always the same for any given angle. If the adjacent side is, for example, twice as long as the opposite side, the ratio is This quotient holds true because the triangles are bound by similarity. Tangent only states the ratio between the opposite side and the adjacent side, it gives no indication about the lengths of the individual sides.