trigonometry - $\cot \theta = -8/9$, $\cos \theta > 0$ Why does the answer have a positive sin and negative cos but mine doesn't? - Mathematics Stack Exchange
Summary of trigonometric identities
Find sec theta, cos theta, and cot theta, where theta is the angle shown in the figure. Give exact values, not decimal approximations. | Homework.Study.com
Unit Circle Definition of Sine and Cosine Functions
Graphing Trigonometric Functions: Sin, Cos, Tan, Sec, Csc, and Cot (examples, videos, worksheets, solutions, activities)