You can put this solution on YOUR website! I'm assuming the following:
68 is the hypotenuse
8 is leg b
If so, use the formula += where a & b are the sides of a right triangle and c is the hypotenuse. +8 = 68
Subtract 8 from each side =60
Take the square root of each side
a = 7.746
.
HOWEVER... If, as I suspect, leg b is 8 long (rather than 8 being the square), the equation becomes: + = 68 + 64 = 68
Subtract 64 from each side =4
Take the square root of each side
a = 2