Question

How do you solve this?

Answer 1

Answer:73825

Step-by-step explanation:

Shuts shield grid

Answer 2

Answer:

$j=8$

Step-by-step explanation:

Special right triangles:

The sides of all 30-60-90 triangles are in the proportion $x:x\sqrt{3}:2x$, 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:

$\sin 30^{\circ}=\frac{4}{j},\\j=\frac{4}{\sin 30^{\circ}}=\boxed{8}$