Use a trigonometric ratio to find the value of x. round your answer to nearest tentha. 6.2 cm b. 12.7 cmc. 15.5 cmd. 10.9 cm

X = base / tan(angle)

x = 8.9 / tan(55)

x = 6.23
x= 6.2

Answer is A

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.