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Additive Identity Property
Displays the line by line proof for the additive identity property

DeMorgans Laws
Demonstrates DeMorgans Laws including the proof

Proofs
Various Proofs in Algebra

Pythagorean Theorem
Figures out based on user entry the missing side or missing hypotenuse of a right triangle. In addition, the calculator shows the proof of the Pythagorean Theorem and then determines by numerical evaluation if the 2 sides and hypotenuse you entered are a right triangle using the Pythagorean Theorem

Pythagorean Theorem Trig Proofs
Shows the proof of 3 pythagorean theorem related identities using the angle θ:
Sin2(θ) + Cos2(θ) = 1
Tan2(θ) + 1 = Sec2(θ)
Sin(θ)/Cos(θ) = Tan(θ)

Rule of 72
Calculates how long it would take money to double (doubling time) using the rule of 72 interest approximation as well as showing the mathematical proof of the Rule of 72.

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Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,
Here is Practical Explanation about Next Life, Purpose of Human Life, philosophical/religious facts,