What is the square root of -1?

9514 1404 393

  i

Step-by-step explanation:

The square root of -1 is the number that, when multiplied by itself, gives the product -1. It does not have a numerical value in the same way that the root of a positive number has a numerical value. It can only be represented by a symbol of some sort: √(-1) or i.

  i² = -1

In some fields, the letter j is used instead (because i already stands for something different).

  i = √(-1)

  j = √(-1) . . . in electrical engineering (at least)

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45