Here are 2 right triangles. Y If = 0.7, what is the measure of a to the nearest degree? Z х 9 S r у​

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.

1+1=22×1=22-1=11-1=1duh