Gimana ya cara nya ?

2.
[tex]{x}^{2} = \sqrt{ {13}^{2} - {12}^{2} } \\ \: \: \: \: \: = \sqrt{169 - 144} \\ \: \: \: \: \: = \sqrt{25} \\ \: \: \: \: \: = 5[/tex]

[tex] \cos\alpha = - \frac{5}{13} \\ \tan \alpha = \frac{12}{5} [/tex]
3.
[tex]{y}^{2} = \sqrt{ {5}^{2} - {4}^{2} } \\ \: \: \: \: \: = \sqrt{25 - 16} \\ \: \: \: \: \: = \sqrt{9} \\ \: \: \: \: \: = 3[/tex]
[tex] \sin \theta = - \frac{3}{5} \\ \tan \theta = - \frac{3}{4} [/tex]