Question

How do you solve this?

Answer 1

`j=8`

Explanation:

Special right triangles:

The sides of all 30-60-90 triangles are in the proportion
`x:x√(3):2x`, where
`2x` is the hypotenuse of the triangle and
`x` is the side directly opposite to the 30 degree angle.

Since the base of the triangle is directly opposite to the 30 degree angle, the hypotenuse, j, must be equal to
`4\cdot 2=\boxed{8}`

Basic trig:

`\sin 30^(\circ)=(4)/(j),\\j=(4)/(\sin 30^(\circ))=\boxed{8}`

Answer 2

Answer:73825

Explanation:

Shuts shield grid