Find the value of the variable. Leave your answer in simplest radical form. a) 2√10

b) 2√5

c) √5

d) √10

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Step-by-step explanation:

This is a 45-45-90 triangle whose leg to hypotenuse ratio is 1 /

so I set up a proportion of 1 / = x / 2

cross-multiply to get x = 2

x = 2 / and multiply numerator and denominator by , this is called rationalizing the denominator