Answer:
A : 10
Step-by-step explanation:
To know how far your values differ apart from the mean of the records
Sin(α+β)=sin(α)cos(β)+cos(α)sin(β)
sin(α-β)=sin(α)cos(β)-cos(α)sin(β)


Answer:
(C).
Step-by-step explanation:
=
Answer:
80 & 120
Step-by-step explanation:
16×5 & 40×2=80
24×5 & 40×3=120