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:
x = 66
Step-by-step explanation:
Have a nice day
Answer:
Step-by-step explanation:
While some might feel that online learning is the fun leisurely form of schooling that grants tons of free time, it honestly gets old quick. Being in quarantine makes it all the more worse because you do nothing all day. On the subject of math though, it is a disservice to have to learn math online. Personally, it is my experience that having a physical teacher and classroom to learn with is crucial to ones mathematical ability, but it's not the end of the world, it won't last long and it won't affect you that bad. Sure, the benefits include having more control over your day which is a good source of preparation for college life and responsibilities of being an adult, but you lose daily interpersonal interactions and typical casual daily exercise, since you no longer walk to class. Nevertheless, we will push on.
Answer:
I'm pretty sure it's the 8 feet deep hole
Step-by-step explanation:
You're earning 8 dollars so that can't be negative.
Temperature can be negative but it doesn't have the - in front of it.
It would be a confusing question if that's the answer because then you'd be basically guessing at it.
I don't think it's the throw because you can't actually throw in negative/throw backwards for it to be negative.
8 feet hole is the only one that makes sense, since you're going down
Show another picture i cant see you
