eCalc is an easy to use scientific calculator that supports many advanced features including unit conversion, equation solving, and even complex-number math. eCalc is offered as both an online calculator and as a downloadable calculator. The calculator mode is set by clicking on the "ALG/RPN" symbol in the status bar or by changing the mode inside the menu dialog box.
Basic Functions:
-Addition
-Subtraction
-Multiplication
-Division
-Sign
-Square
-Square Root
-Raise to the Power
-Natural Exponential
-Logarithm
-Natural Logarithm
-Inverse
-Exponent
-Factorial
-PI
-Sine
-Inverse Sine
-Cosine
-Inverse Cosine
-Tangent
-Inverse Tangent
-Cosecant
-Inverse Cosecant
-Secant
-Inverse Secant
-Cotangent
-Inverse Cotangent
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