Tricky Sets and Trig Questions - Can You Solve Them?

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In summary, The person is asking for help with three questions, one involving sets and two involving trigonometry. They express frustration with not being able to solve the sets question and mention that they were hoping for some geniuses to help them. The conversation then shifts to discussing one of the trigonometry questions and the use of double angle formulas to solve it.
  • #1
guynoone
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Hi, I just have three question and I'm wondering how to solve them.

The first one is a sets question and it is literally infuriating trying to even contemplate it. I've asked many other people how to solve and no one knows how. I was hoping there would be a few geniuses that solve it here

The other 2 are just trig questions. I have a feeling at the back of my head that I knew how to solve them, but that's it.
 

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  • #2
Hi guynoone! :smile:

Why couldn't you just type them out? :confused:

To show that sin3x/(1 + cos3x) = tyan(3x/2), just write sin3x and cos3x in terms of functons of 3x/2. :smile:
 
  • #3
tiny-tim said:
Why couldn't you just type them out? :confused:

I hate looking for the correct symbols. I also wanted to test out the new scanner :)

To show that sin3x/(1 + cos3x) = tyan(3x/2), just write sin3x and cos3x in terms of functons of 3x/2.

Sorry, my mind's a bit fuzzy. What happens to that +1 then?
 
  • #4
Why don't you try what he suggested and then see what happens?
sin(3x)= sin(2(3x/2) and cos(3x)= cos(2(3x/2) so tiny-tim is suggesting you use the double angle formulas.
 

FAQ: Tricky Sets and Trig Questions - Can You Solve Them?

What are sets and how are they used in mathematics?

Sets are collections of objects or elements that share a common characteristic or property. In mathematics, sets are often used to organize and classify data, and to define relationships between different elements.

How do I represent a set?

In mathematics, sets are often represented using curly braces { }. For example, the set of even numbers can be represented as {2, 4, 6, 8, ...}.

What is the difference between a set and a subset?

A subset is a smaller set that contains elements from a larger set. In other words, all elements in a subset are also elements of the larger set. For example, the set of even numbers is a subset of the set of integers.

How do I perform operations on sets?

There are several operations that can be performed on sets, including union, intersection, and complement. Union combines all elements from two sets, intersection finds elements that are common to both sets, and complement finds elements that are in one set but not the other.

What is trigonometry and how is it related to sets?

Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It is related to sets because trigonometric functions, such as sine and cosine, can be represented using sets of points on a unit circle.

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