Question

Find the missing angle.
Round to the nearest tenth.

Answer 1

9) 18.2

10) 59 degrees

11) 48.6 degrees

12) 25.8 degrees

13) 41.1 degrees

Explanation:

number 9:

sine 60 =
`(21)/(x)`

x = 18.18 ⇒ 18.2

number 10:

tan x =
`(30)/(18)`

x = 59

number 11:

sine x =
`(12)/(16)`

x = 48.59 ⇒ 48.6

number 12:

cos x =
`(36)/(40)`

x = 25.8

number 13:

sine x =
`(25)/(38)`

x = 41.1