A plane's vector, p, has a magnitude of 200 miles/hour and a direction angle of 135°. Arrange the wind vectors u, v, w, x, y, and z in increasing order of the direction angles of their vector sums with vector p.

hello from mrbilldoesmath!

answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

the answer is 1030 it's very simple math.

im guessing (23,14). hope this : )