If tan A = 3/4 , A>90 and tan B = 5/12, B<90 , evaluate cos(A+B)

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

need more info

step-by-step explanation:

the answer for the second equation is (4,0)

2/3=10/15

1/5=3/15

10+3=13/15

2 13/15 is the answer