Indices law - Law 4
How to remember `a^0=1`
Anything to the power zero is `1`
It doesn't matter how many people there are there is only one sun.
One sun is one.
Try simple numbers you know first
We know `10/10=1`
But so too `10^2/10^2=1`
But this can be rewritten as `10^2\times 10^-2`
And rewritten again as `10^(2-2)=10^0`
So `10^0` must be `1`