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Mathematics 7 Online
tigerlover (tigerlover):

What is the length of side s of the square shown below? http://media.apexlearning.com/Images/200711/23/5766c3de-3bfa-4173-b95b-8b877ca29fa0.gif A. B. 2 C. 4 D. E. F. 1

OpenStudy (aaronandyson):

Use cos theta.

OpenStudy (agent0smith):

If you haven't learned trig functions, notice it's a special right triangle. http://media.wiley.com/Lux/23/372023.image1.jpg

OpenStudy (agent0smith):

Notice they hypotenuse on there is a*sqrt2. What's the hypotenuse of the triangle in your diagram?

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