Question

How you do this
I need help
I’m crying

Answer 1

2

Explanation:

A 30 60 90 triangle tells us all the sides as long as we know one of the sides. (you can google it and it will show you). Looking at the picture added below, we can solve for j. The x in the picture is j and the 2x in the picture is 4. Thus we know that 2x=4 which means x=2

Answer 2

U subtract 90 from 60 which is 30. J=30