Question

Identifying Trig Ratios (Diagram), Level 1Jun 04, 3:20:20 PMExpress cos N as a fraction in simplest terms.L28M MZ21

Answer 1

`\begin{gathered} \cos N=(21)/(h) \\ h=√(21^2+28^2) \\ h=√(441+784) \\ h=√(1225) \\ h=35 \\ \cos N=(21)/(35) \\ \cos N=(3)/(5) \\ \text{The value of cosN is }(3)/(5) \end{gathered}`