Need Final Exam help

[apearl2014]

how do you find sin,cos and tan x/2?
how do you simplify
sinx cscx

---

cotx

how do I indicate power using DeMoivre's Theorem?

 

[Deleted member 4993]

how do you find sin,cos and tan x/2?
how do you simplify
sinx cscx

---

cotx

how do I indicate power using DeMoivre's Theorem?

Is one of your problems:

Simplify:

\(\displaystyle \dfrac{sin(x) * cosec(x)}{cot(x)}\)

To start off, convert cosec and cot to sin and cos ... and continue....

Please share your work with us.

You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL:

http://www.freemathhelp.com/forum/th...217#post322217

We can help - we only help after you have shown your work - or ask a specific question (e.g. "are these correct?")

 

[stapel]

how do you find sin,cos and tan x/2?

That will depend upon what you're taking the sine and cosine of (you don't include any arguments for these expressions) and what the value of "x" is in the tangent expression.

how do I indicate power using DeMoivre's Theorem?

Exponents are usually denoted, in text form, with the "carat" character: ^

This is probably the Shift character on the "6" key on your keyboard.

Or did you mean something else...?