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    Angle of elevation word problem pls help?

    A tree is broken by the wind. A right triangle is formed at the point where the tree is broke. The top of the tree touches the ground 13 meters from the base of the tree and makes an angle with the ground measuring 29 degrees. How tall was the tree before it was broken? My answer is 22.064m...
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    central angle question?

    what is the central angle of a circular arc equal to 2/5 the circumference of a circle?
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    Set theory, logic problem. pls. help?

    in a certain experiment in chemistry, the following number of students used the reagents A, B, and C. 18 students used all the reagents A, B, and C 23 students used reagent A and B 25 students used reagent A and C 20 students used reagent B and C 4 students used reagent A only 9...
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    about sharp calculators?

    is the sharp calculator EL 509W and sharp EL 531 vh natural display??
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    ceramic braces over mettalic braces?

    i'm planning to have braces and have it ceramic. is it recommended to have ceramic? is it really that fragile? and would it turn yellow if i will have it for 2 years? please share your case if you're in ceramic braces. i'm 25 and a teacher. would you recommend me to have ceramic or metallic braces?
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