# Yahoo Web Search

1. ### How do you find sin(- 22 .5) using a half-angle identity?

sin(- 22 .5) =-sin( 22 .5) Using the half-angle identity sin^2( 22 .5) = (1-cos(45))/2 = (1-(1/sqrt(2)))/2 = (sqrt(2)-1)/2sqrt(2) = (2-sqrt(2))/4 = sin(- 22 .5) = -(1/2)sqrt(2-sqrt(2))

1 Answers · Science & Mathematics · 04/11/2008

2. ### what is genetron 22 , chlorodifluoromethane used for? is it expensive?

... of HCFC- 22 , R- 22 , Genetron 22 or Freon 22 , and is commonly used in air conditioning applications, such as residential split ...

3 Answers · Science & Mathematics · 26/01/2009

3. ### Minor characters in Catch- 22 ?

catch- 22 is all about the futility of war and life in a bureaucratic system. the character of...

1 Answers · Arts & Humanities · 17/05/2009

4. ### How do you solve 7^x= 22 using logarithms?

here's the rule you need: log(m^n) = n · log(m) log(7^x) =log( 22 ) -> x · log(7) = log( 22 ) x · log(7)/log(7) = log( 22 )/log(7) x = log( 22 )/log(7)

3 Answers · Science & Mathematics · 28/03/2013

5. ### I'm 22 I use eye creams(anti wrinkle etc!) is this okay ....?

I'm 22 and I use Jo Malone Green Tea & Honey eye cream. ...

6 Answers · Beauty & Style · 27/06/2007

6. ### Why should I use Firefox 22 ?

... and adds some new features, taking the version to release 22 .0. If you use Firefox you should update as soon as possible. By default, Firefox...

1 Answers · Computers & Internet · 05/07/2013

7. ### Find the exact value of tan 22 .5 by using the expression for tan 2x?

...and Tan 45° = Tan (2* 22 .5°) Therefore 1 = Tan (2* 22 .5°). Using the double angle formula for tangent, which is Tan 2x = (2Tanx)/(1...

2 Answers · Science & Mathematics · 11/04/2016

8. ### Catch 22 use of word "crazy"?

It was (as I recall) only used in conversation. Being set in the 1940s, the characters would have used ...

3 Answers · Education & Reference · 17/03/2009

9. ### How to construct line segment with length sin(pi/ 22 ) only using compass and ruler?

Assume that you have a segment of length 1 and a segment of length sin(pi/ 22 ). You could use these to construct an angle of pi/ 22 , which would be the exterior angle of a 44-gon...

2 Answers · Science & Mathematics · 11/02/2015

10. ### what kind of ammunition does a cal . 22 short use ..?

It uses the the short . 22 ammo, but if the person you got it from, or the person who has it now doesn't know, I would take it to someone who knows guns to check it out and make sure it's servicable.

3 Answers · Sports · 11/04/2009