What is sqrt(1/90)?

1 Answer
Dec 15, 2015

(sqrt 1)/(sqrt90)=(sqrt 10)/(30)

Explanation:

Simplify.

(sqrt 1)/(sqrt90)

Simplify sqrt 1 to 1.

1/(sqrt90)

Factor sqrt 90.

1/(sqrt (3xx3xx2xx5))

Simplify.

1/(sqrt(3^2xx2xx5))

Apply square root rule sqrt( a^2)=a.

1/(3sqrt(2xx5))

Simplify.

1/(3sqrt 10)

Rationalize the denominator.

1/(3sqrt 10)xx(sqrt10)/(sqrt 10)

(sqrt 10)/(3sqrt 10sqrt 10)

Apply square root rule sqrtasqrta=a.

(sqrt 10)/(3xx10)

Simplify.

(sqrt 10)/(30)