Question

Help please?

Answer 1

9)`" x=13.8"`
10)`" x= 8.1"`
11)`" x= 6.0 "`
12)`" x= 5.5"`

Explanation:

9)

`B=37^@`
`BC=11`(adjacent side)
`BA=x`(hypotenuse)
`cosB=(BC)/(BA)`
`cos37^@=11/(x)`
`x=11/cos37^@`
`x=13.8`

10)

`A=32^@`
`AC=13`(adjacent)
`CB=x`(opposite)
`tanA=(CB)/(AC)`
`tan32^@=x/13`
`x=13tan32^@`
`x=8.1`

11)

`A=50.1^@`
`AC=5`(adjacent)
`CB=x`(opposite)
`tanA=(CB)/(AC)`
`tan50.1^@=x/5`
`x=5tan50.1^@`
`x=6`

12)

`B=60^@`
`BA=11`(hypotenuse)
`BC=x`(adjacent)
`cosB=(BC)/(BA)`
`cos60^@=x/11`
`x=11cos60^@`
`x=5.5`