Question

please HELP with geomtry questionnn!!!picture in comments~!!!

Answer 1

You should use the cossine rule.

Answer 2

\[b^2=15^2+12^2-2*15*12*cos(106^o)\]\[b^2=225+144-360*cos(106^o)\]\[b^2=468.23\]\[\boxed{b=21.64}\]

Answer 3

why are u so smart

Answer 4

god bless u thank u

Answer 5

Thanks ;)
Amen, and you're welcome ;)