Answer:
9) 18.2
10) 59 degrees
11) 48.6 degrees
12) 25.8 degrees
13) 41.1 degrees
Step-by-step explanation:
number 9:
sine 60 = [tex]\frac{21}{x}[/tex]
x = 18.18 ⇒ 18.2
number 10:
tan x = [tex]\frac{30}{18}[/tex]
x = 59
number 11:
sine x = [tex]\frac{12}{16}[/tex]
x = 48.59 ⇒ 48.6
number 12:
cos x = [tex]\frac{36}{40}[/tex]
x = 25.8
number 13:
sine x = [tex]\frac{25}{38}[/tex]
x = 41.1
