Posted by sara on Wednesday, February 10, 2010 at 5:58pm.
in an isosceles triangle the vertex angle measures 90 degrees and the length of each congruent leg is 5√2. whats the length of the base?

MATH trigonometry  Reiny, Wednesday, February 10, 2010 at 6:00pm
Isn't the base the hypotenuse of a rightangled triangle?
so h^2 = (5√2)^ + (5√2)^2
= .......

MATH trigonometry  sara, Wednesday, February 10, 2010 at 6:02pm
20?

MATH trigonometry  Reiny, Wednesday, February 10, 2010 at 6:10pm
How did you come up with that?

MATH trigonometry  sara, Wednesday, February 10, 2010 at 6:26pm
i put it into the calculator and i got 20

MATH trigonometry  Reiny, Wednesday, February 10, 2010 at 6:35pm
You should not need a calculator.
h^2 = (5√2)^ + (5√2)^2
= 50 + 50
= 100
h = √100 = 10

MATH trigonometry  sara, Wednesday, February 10, 2010 at 6:39pm
oohh okay i get it now
thank you soo muchh!
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