Answer:
EF is the longest side of △DEF,
DF = 6 cm and
DE = 6 StartRoot 3 EndRoot cm.
Step-by-step explanation:
The angle ∠ EDF = 90° of the right triangle Δ DEF and ∠ DEF = 30° and ∠ EFD = 60°.
The hypotenuse EF is 12 cm.
Now, Sin ∠ EFD = DE/EF
⇒
⇒ DE = 6√3 cm.
Again, Cos ∠EFD = DF/EF
⇒
⇒ DF = 6 cm.
Therefore, EF is the longest side of △DEF, DF = 6 cm and DE = 6 StartRoot 3 EndRoot cm. (Answer)
Answer:
Step-by-step explanation:
Set up a ratio in the form of pages/minute:
then fill in next to that how many pages per minute George can read:
Now we want to figure out how long (time is our unknown, so we call that x) it will take him to read 85 pages. The 85 goes in a ratio on the same line as the other number of pages:
Cross multiply to get 15x = 1020
Now divide both sides by 15 to get x = 68 minutes, which is an hour and 8 minutes.
Answer:
i am so sorry that i dont know
Answer:
would you still like me to help you with this problem?
Answer:
you are correct sir
Step-by-step explanation: