Need questions 11-13 done pls

Need Questions 1113 Done Pls class=

Answer :

[tex]11)Sin45=\frac{1}{\sqrt{2} } \\12)Tan60=\sqrt{3} } \\13)Cos30=\frac{\sqrt{3} }{2}[/tex]

Hope it will help you.

Step-by-step explanation: