Answer:
240
Step-by-step explanation:
Trigonometry Ratio:
Sin65°=v/15
v=15 sin65°
v=13.6°
Sinw°=v/21
= 13.6/21
w=sin^{-1}(13.6/21)
w=40.3°
Hope it helps! :)
A
empirical formulas are the simplest form of notation so they provide the lowest whole number ratio between the elements in a compound
2,736
18
