Question

Find side x to one decimal place

Answer 1

10.8 cm

Explanation:

To solve this answer, we should use sine law.

`(SinA)/(a)`=
`(SinB)/(b)`

`(Sin40)/(7)`=
`(Sin81)/(x)` (cross multiply)

xSin40 = 7Sin81

xSin =
`(7Sin81)/(40)`

x=
`(7Sin81)/(Sin40)`

x= 10.8 cm