waguihmina
waguihmina waguihmina
  • 01-01-2021
  • Mathematics
contestada

how to prove that
[tex] \cos( \alpha ) = \frac{1}{2} ( {e}^{i \alpha } + {e}^{ - i \alpha } )[/tex]
​

Respuesta :

goldenpoo21
goldenpoo21 goldenpoo21
  • 01-01-2021
First you need to do is solve a by simplifying both sides.
After you’ve done that you would need to keep the variable alone.
e
i
a
2
+
e
−
i
a
2
−
cos
(
a
)
=
0
Answer Link

Otras preguntas

What was the famous home Thomas Jefferson built called?
3k-1=7k+2How do I solve this? and other problems like this?
0.59 write the decimals in expanded form
What is 9 divided by 160
The energy in fossil fuels is derived from the energy stored in plant and animal matter
how many number of strands are in DNA?
Round 125 458 to the nearest hundred thousand
Together, tom and max have 72 football cards. Tom has 2 more than 4 times as many cards as Max has. How many football cards does tom have?
the _______ is where the geosphere meets the ocean
What is the value the 0 in the number 601,099