In 4HIJ, i = 6.6 inches, j = 6.4 inches and ZH=62º. Find the length of h, to the nearest 10th of an inch.

It would be the second one because it passes the vertical line test

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.