Please Input Valid Arithmatic Operations for Calculating Values.
AC is used for All Clear and DEL is used for deleting one value.
For Trigonometric Values of sin, cos and tan; first input the angle value in radian as
{Degree Value*(pi/180)} than click on desired trigonometic function.
For other Scientific values, first input value than click on the function like log,
root, power exponential and factorial.
Root function only gives square-root value for input value.
Power function only gives the square value for input value.