Answer: B: By digging snow tunnels from their shelters to the tunnel and D:By relying on lamps to light the tunnels where they lived and worked
Explanation:
D. Ledger lines are used to extend musical staff. I think my answer is correct because ledger lines represent notes that surpass the bottom and up limits.
Sin = opposite over hypotenuse
The opposite side of ∠A is BC, or <span>a
</span>The hypotenuse is c (longest length)
a/c is your answer
<span>B. a/c
</span>
hope this helps
