Tolong nomor 3. a dan b besok mau dikumpulkan

b.
[tex] \cos \beta = \frac{ \sqrt{18} }{5} \\ \tan \beta = \frac{ \sqrt{7} }{\sqrt{18} } \\ \sec \beta = \frac{5}{ \sqrt{18} } \\ \csc \beta = \frac{5}{ \sqrt{7} } \\ \cot \beta = \frac{ \sqrt{18} }{ \sqrt{7} } [/tex]