You can not simplify 7/10 because 7 os only on 1 and 7s times table.
There is a set A representing some elements in it. 4 is a part of the set which is represented as 4 ⊂ A.So 4 being an element from A can also be treated as a set and is called subset of A.
<span>Direction on a line,YES. Direction on a plane, or in 3-dimensional space,NO</span>
Nope, the opposite angle is probably. If the opposite side is 330. To find this angle you do 360-330=30 degrees
