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Homework Help: pre cal

Posted by Kelsey on Friday, November 30, 2012 at 3:51pm.

For a given right triangle, angle B = 46±
and side c = 30 feet. What is the length of side a to the nearest foot?

• pre cal - Steve, Friday, November 30, 2012 at 4:07pm

  assuming A is the right angle,
  cosB = 30/a
  a = 30/cos46° = 43.19
  

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