Question

Find missing side lengths

Answer 1

`y=30√(2)`

Explanation:

`In`Δ
`ABC`

`tan45=AB/BC`

`1=30/BC`
`[tan45=1]`

`-------\\BC=30 \\-------` ⇒
`OC=30\\`

`and`
`In` Δ
`ABC`

`Cos45=Bc/AC`

`1/√(2) =x/y`

`y=√(2)*x`

`y=30√(2)`

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hope it helps....

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