If you can pass this quiz, you are ready to take this course
- Evaluate
in terms of

- Shyam (T/C)
- If
then what does
equal?
where ![{\displaystyle x=[-1,1]\,\ }](https://wikimedia.org/api/rest_v1/media/math/render/svg/cfb9a0c09b2c153088afdbe63c4b4146b0c8c862)
- Shyam (T/C)
- Prove
using

- divide both sides by


- Shyam (T/C)
- Find the double angle idenities for the cosine function using the above rule.
- replace
by 

- Shyam (T/C)
- Find the half angle idenities from the double angle idenities.

- replace
by
using 
- Shyam (T/C)
- Find the value of
without exponents using the above rules


- Shyam (T/C)
- (Challenge) Find the value of
without exponents


using
and 

using 


- Shyam (T/C) 19:42, 18 November 2006 (UTC)