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Question
a. solve the equation for theta, assume all angles acute:
1. csc(20degrees)= sec(theta + 10degrees)
2. cos (3theta) = sin (40degrees - theta)
b. find the value of the angle:
1. sin B = 0.2840
2. cot A = 3.5261
3. sec A = 3.046

Answer
These questions use trigonometric identities that are listed here:
http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Solutions:
a1.  http://www.flickr.com/photos/dwread/8376858553/in/photostream
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a2.  http://www.flickr.com/photos/dwread/8379188470/in/photostream
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b.  http://www.flickr.com/photos/dwread/8377947829/in/photostream

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Janet Yang

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I can answer questions in Algebra, Basic Math, Calculus, Differential Equations, Geometry, Number Theory, and Word Problems. I would not feel comfortable answering questions in Probability and Statistics or Topology because I have not studied these in depth.

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I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

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Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language

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George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.

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