The window is held open

by a chain $AB$ at an

angle $.$ Given $h1=$

$12\mathrm{.}7[m],w1=$

$1\mathrm{.}66[m],w2=$

$2\mathrm{.}52[m],d=3\mathrm{.}19[m]$

$,$ and $=15[$degree$].$lf

the mangitude of the

force $F_1=66[N],$

answer the following:

Part $1.$ Find

the length of

the chain

$AB.$

Part $2.$ Find

the unit

vector that

gives the

direction of

the force $F.$

Part $3.$ Find the vector representation of the force F$.$