You will be cool if you handle with tangent!!
Question: Find \((\tan 15^o + \sqrt{3})^2\) without a calculator. Answer: It is not easy to obtain \(\tan 15^o\) without a […]
Tag: math
Do you know the perfect number?
A perfect number can be expressed by the sum of its positive divisors except itself. For example, the specified divisors […]
You need to know the following math before taking introductory physics.
I have seen the following mathematical errors for years in physics classes. \(\sqrt{16ab} = 4ab \) The correct one should […]
Can you find the errors in these equations?
Can you correct the following equations? \((a+b)^2 = a^2 + b^2 \) \(\frac{1}{a+b} = \frac{1}{a} + \frac{1}{b} \) \(\frac{10^{10}}{2} = […]
Can you solve this problem? (The area of squares)
In the picture, there are three squares. Each size of square is different, and the they are aligned as shown. […]
Do you know Pell’s equation?
An indeterminate equation is an equation that has more than one solutions. Pell’s equation is one of them that is […]