Sin (45o) = a / h = a / a sqrt (2) = 1 / sqrt (2) = sqrt (2) / 2 cos (45o) = a / h = a / a sqrt (2) = 1 / sqrt (2) = sqrt (2) / 2

tan (45o) = a / a = 1

csc (45o) = h / a = sqrt (2)

sec (45o) = h / a = sqrt (2)

cot (45o) = a / a = 1

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.

b. b < 1 might be the correct answer

the answer is z7+8/5

the answer to 1/4x+5/3x-4=2-1/12x is x=3

hope this if needed hmu