Question

If vector A⃗ has components Ax and Ay and makes an angle θ with the +x axis, then

A) A=Ax+Ay (where Ais the magnitude of A⃗ )
B) θ =AyAx
C) cosθ = AxA2x+A2y√
D) tanθ =AxAy

Answer 1

then what : ) ?

Answer 2

A) A=Ax+Ay (where Ais the magnitude of A⃗ )
B) θ =AyAx
C) cosθ = AxA2x+A2y√
D) tanθ =AxAy

Answer 3

Have you typed the options accurately ?
I think C must have a typo error, and maybe D as well

Answer 4

C) cosθ = \[\frac{ Ax }{ \sqrt{A \frac{ 2 }{ x } + A \frac{ 2 }{ y }} }\]

Answer 5

D) tanθ = \[\frac{ Ax }{ Ay }\]

Answer 6

There are a few things you need to know to answer this question, nothing too complicated though.

Answer 7

like, how are the trig functions cos and tan defined, and how is the length of a vector calculated from its components
and it would help if you draw yourself a diagram of the vector and its components

Answer 8

Im pretty sure tanθ = is y/x so d would be wrong