Homework Help: trig

Posted by Cas on Saturday, January 29, 2011 at 6:28pm.

find the distance from the orgin to each of the following points .If your answer is irrational,leave it in radical form.
a.(3,-7)
b.(-4,6)
c.(0,5)
d.(6,0)
e.(-2,-4)
f.(0,0)

my answers : what do they mean by leave it radical form

a.sqrt 58

b.Sqrt 52 = 2sqrt 13 or should i just leave it 52

c.5

d.6

e.i dont know ?? is it 2 sqrt5 or should i just leave it 20

f.0

trig - helper, Saturday, January 29, 2011 at 7:22pm
Leave in radical form means don't simplify the sqrt (radical) to exact value.

Example, exact value of (sqrt(2))= 1.4142

All your answers are correct.

Always simplify radicals, ie,(like you did), but wasn't sure,
(sqrt(52)) = 2(sqrt(13)) don't leave as
(sqrt(52))
(sqrt(20) = 2(sqrt(5)) don't leave as
(sqrt(20)

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