What does and i on a calculator mean?

Mathematics

2 answers:

Elena L [17]3 years ago

6 0

Answer: imaginary number. (I'm not being sarcastic thats literally what it is)

AlladinOne [14]3 years ago

4 0

I think it means factorial

You might be interested in

Plz Help!! With 5,6,7,8

strojnjashka [21]

6 is 9.088 because it said it for u

8 0

4 years ago

15) x +1 +1 +6x > 3(x - 4) - (x - 4)<br>

victus00 [196]

Answer:

x>-2

Step-by-step explanation:

5 0

4 years ago

Solve the equation 2cosA = 3tanA

zavuch27 [327]

$\bf sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)
\\\\\\
tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\\\\
-----------------------------\\\\

2cos(A)=3tan(A)\implies 2cos(A)=3\cfrac{sin(A)}{cos(A)}
\\\\\\
2cos^2(A)=3sin(A)\implies 2[1-sin^2(A)]=3sin(A)
\\\\\\
2-2sin^2(A)=3sin(A)\implies 2sin^2(A)+3sin(A)-2$

$\bf \\\\\\
0=[2sin(A)-1][sin(A)+2]\implies 
\begin{cases}
0=2sin(A)-1\\
1=2sin(A)\\
\frac{1}{2}=sin(A)\\\\
sin^{-1}\left( \frac{1}{2} \right)=\measuredangle A\\\\
\frac{\pi }{6},\frac{5\pi }{6}\\
----------\\
0=sin(A)+2\\
-2=sin(A)
\end{cases}$

now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1

now, we have -2 = sin(A), which simply is out of range for a valid sine, so there's no angle with such sine

so, only the first case are the valid angles for A

8 0

3 years ago

We have enough material to build a fence around a station

Sergeeva-Olga [200]

Answer:

$60ft$