Question

1. Solve the following for the missing va 18 V 56 21

Answer 1

We use the thales theorem to solve this question, then it follows that:

`(56)/(56+21)=(x)/(x+18)`

then:

`(56)/(77)=(x)/(x+18)\Rightarrow56(x+18)=77x`
`56x+1008=77x`
`1008=77x-56x`
`21x=1008`
`x=(1008)/(21)=48`

Then the missing value is x=48