I JUST NEED $2-41$ AND $2-43$ THANK YOU!

$2\mathrm{.}40$ The link lengths of a planar four$-$bar mechanism are $r_0=120,r_1=60,r_2=140,$ and

$r_3=80.$ Find the orientation of links $2$ and $3$ when the internal angle between the crank

and the fixed link is $30$ and the linkage is in the open phase $($i$.$e$.,$ the coupler does not

cross the fixed link$).$ Use the vector cross$-$product method.

$2\mathrm{.}41$ Repeat Problem $2\mathrm{.}40$ for a $60$ internal angle.

$2\mathrm{.}43$ Repeat Problem $2\mathrm{.}41$ by using the dot product method.

JUST NEED $2-41$ AND $2-43!!!$ THANKS!