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In math calculator calculate triangular number is a number that can be represented as the sum of consecutive integers starting.    


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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Calculator converts numbers to roman Arabic or Roman to Arabic vice versa. The maximum value that the calculator correctly parse the number 3999.              
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Calculator average revenue per employee in the company

Calculator on the basis of the specified amount paid salaries and number of employees, calculates the average annual and          
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Combustion Calculator - L/100km <-> MPG (U.S.)

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Calculator horsepower - power converter of kilowatts (kW)

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Calculator calculates the stated amount of kilowatts to horsepower, taking into account effectiveness.