Which of the following are true statements about a 30-60-90 triangle?
check all that apply.
a. the hypotenuse is twice as long as the shorter leg.
b. the longer leg is times as long as the shorter leg.
c. the hypotenuse is twice as long as the longer leg.
d. the longer leg is twice as long as the shorter leg.
e. the hypotenuse is times as long as the longer leg.
f. the hypotenuse is times as long as the shorter leg.

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.