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April 18, 2015

April 18, 2015

Posted by **Dolores** on Wednesday, January 26, 2011 at 7:38pm.

- Geometry -
**Reiny**, Wednesday, January 26, 2011 at 8:15pmLooks like the ambiguous case of the sine law.

let the angle opposite the 90 be Ø

sinØ/90 = sin 59/80

sinØ =.9643

Ø = 74.6 or 105.4°

so the third angle is

46.4° or 15.6°

now use the sine law for each case to find the two different possibilities for the third side.

There are two triangles possible with your given information, try sketching both using my answers.

- Geometry -
**Emily**, Wednesday, February 4, 2015 at 9:41pmJason designed an arch made of wrought iron for the top of a mall entrance. The 11 segments between the two concentric circles are each 1.25 m long. Find the total length of wrought iron used to make the structure. Round the answer to the nearest meter. Show your work.

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