PI may be equal to only four in the army. In other places π = 3.14159265358...
And the sine of up to four rising only in time of war. In peacetime, he is unable to overcome one.
maci.Cartwright answered on March 19th 20 at 09:19
Sine is the Y coordinate of the point rotating on the unit circle. PI is a code, it did a half-turn. What it means to make PI=4? This is a half-turn or not? If a half-turn, the sine of PI is zero. If not a half-turn, please explain.
In General, write a formula that uses the number PI, and replace it with your desired number. The sine of PI, like as not need.