Tan w=20/83
inverse tan 20/83=13.55 degrees
1/4 or .25 because 6 * 4 = 24 so 6 would be a quarter of 24
During Distributive property, the number on the outside of the parenthesis basically gets multiplied by the numbers inside the parenthesis. In this case, you would multiply 6 by 5 and 4. When you get the products, then follow the sign that comes next. In this case, you would add the products to get a total sum. I attached a photo for further reference.
Hope this helps!