diketahui cos Alfa = 5 / 13 Dan Alfa sudut lancip Cot Alfa ?

cos α=5/13
cos²α+sin²α=1
sin²α=1-cos²α
sin²α=1-(5/13)²
sin²α=1-25/169
sinα=√169-25/169.
sinα=√144/169
sinα=12/13
tanα=sinα/cosα
tanα=12/13 / 5/13 = 12/5
cotα=1/tanα= 1/ 12/5 = 5/12