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Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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The calculator calculates the change in the amount of carbonic acid in the body caused by impaired ability to excrete carbon dioxide through the respiratory system - an illness called acute respiratory acidosis.        
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Financial Calculator will calculate the price of the purchase or sale of Treasury bills and the amount and an annual discount rate.                  
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Field and volume of a sphere

Calculator by entering the radius of the sphere is calculated its surface and volume.