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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 calculates the stated amount of kilowatts to horsepower, taking into account effectiveness.          
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Enthalpy calculator is used to calculate the heat transfer during the process kwazistatycznego occurring in a closed thermodynamic system under constant pressure (isobaric process).      
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Calculator examines the variability of the course of a quadratic function in the field of real numbers.