Frank is having a party. He'll have 3 tables for every 12 guests. Complete the table below showing the number of tables and the
number of guests.
1 answer:
You might be interested in
The main identity you need is the double angle one for cosine:
We get
Expand the numerator to apply the identity again:
Finally, make use of the product identity for cosine:
so that ultimately,
Answer: 128
Step-by-step explanation: