Definition of acute triangle function

Definition of acute triangle function


In the right triangle ABC, ∠ C = 90 & # 186;, hypotenuse AB = C, two right angles BC = a, AC = B
The opposite side / hypotenuse of ∠ a = ∠ a sine, denoted as: Sina = A / C
The adjacent / hypotenuse of ∠ a = cosine of ∠ a, denoted as: cosa = B / C
The opposite side of a / the adjacent side of a = the tangent of a, denoted as Tana = A / b
Similarly, there is an acute trigonometric function of B