Given right triangle xyz, what is the value of tan(y)?

one-half
startfraction startroot 3 endroot over 3 endfraction
startfraction startroot 3 endroot over 2 endfraction
startfraction 2 startroot 3 endroot over 3 endfraction

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.