Answer:
D. 60°
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you that the relationship of interest is ...
Sin = Opposite/Hypotenuse
sin(M) = ON/OM = 4(√3)/8 = (√3)/2
M = sin⁻¹((√3)/2) = 60°
A calculator can show you the answer to these very quickly.

Answer:
C. Always become smaller
Step-by-step explanation:
As the demand curve slopes downwards, it implies there's a decrease in quantity demanded as price percentages increases, therefore, price elasticity of demand becomes smaller.