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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. ### 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

3. ### 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

4. ### 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

5. ### 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

6. ### 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

7. ### 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

8. ### 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

9. ### 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

10. ### Math is not my best subjuct. I could use some help with these questions?

22) Use the distribute property to help you solve the equation: 9(w-4) = 36 w = 8. \...

1 Answers · Science & Mathematics · 12/03/2011