The graph of y = cos(x+pi/2)
is the graph of the y = cos(x) shifted in which direction?

Distance=slopeslope is -2/4which equals-1/2the distance between these two points is -1/2

10,000 hope i ! : )

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.