MaxWong

Wow that's 4 trillion!! You must be a rich guy!!

Btw, 3,20% per annum? per month? 

And how long time do you want to calculate? 1 year? 2 year? 1 second(LOL XD)?

EP:

Yours is definitely better, but you can do derivatives on this calc too :)

"diff(sin(x))"

"diff(ln(sin(x)))"

"diff(2x^2)"

"diff(log(e^x))"

These are some examples of what can this calculator do :)

What do you mean?

- Negative sine?

$-\sin \theta$?

- Arcsine?

$\sin^{-1}\theta$?

For negative sine just type "-sin()"

Arcsine just type "asin()"

unit is wrong but 

$\tan\left(\dfrac{1}{\sqrt{\phi}}\right)\approx 1$!!

Not 1 radian because 1/sqrt(phi) is an angle. So tangent of an angle is just a number.

$$44(1-30\text{%})\\ =$44(.7)\\ = $30.8$

Time? I don't think so but just a guess.

2.7 gcm^(-3).......

The unit does not make any sense....... XD

Let a triangle with any two sides with length a and b exists.

Let the angle between a and b be $\theta$

The height 'h' = $a\sin \theta$OR $b\sin \theta$

The base = b if "height = a sin theta" is true OR = a if "height = b sin theta" is true.

Therefore Area of Any Triangle = $\dfrac{ab\sin \theta}{2}$

Nope. You are not correct.

Calculator is good tool......

$\quad\dfrac{1}{2}\times 9\\ = 9\div 2\qquad \text{Use calculator}\\ = 4.5$