Question

Please help! Thank you​

Answer 1

Explanation:

since it is an isosceles triangle other two angles are 45 and 45 degree.

take 45 degree as reference angle

using sin rule

sin 45=opposite/hypotenuse

1/
`\sqrt{2`=x/
`\sqrt{12`

do cross multiplication

x
`\sqrt{2`=
`\sqrt{12`

x=
`\sqrt{12`/
`\sqrt{2`

x=
`\sqrt{3`