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1932. Solution of triangles

Published online by Cambridge University Press:  03 November 2016

D. F. Ferguson
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Type
Mathematical Notes
Information
The Mathematical Gazette , Volume 30 , Issue 291 , October 1946 , pp. 234 - 235
Copyright
Copyright © Mathematical Association 1946

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References

page note 235 * x sec ½ (B-C) in most cases gives a more accurate result a than y cosec ½ (B-C).

page note 235 † Checking the larger side in most cases gives a more accurate result.

page note 235 ‡ Further notes to the examples:

  • (i) All angles used in the evaluation are acute.

  • (ii) if, as can easily happen in the tangent formula, the angles to be found get interchanged, by using ½ (B-C) in cases where it should be ½(C-B, the error is at once shown up by the check.