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

How do you construct a rectangle
How is the position of Muslim women problematic in the West? To what extent is this an inherent part of Islam?
Please help , I need to turn this in
What are the elements that makeup a multimedia presentation?
Is person with high self esteembwill likely have a positive emotional well being
-3y + 4xy - 2x² + 2x + y²- 4xy + 2y+ 3x²=?
True r false? A circle could be circumscribed about the quadrilateral below?
Chose the correct verb form to complete the following sentence. A team of explores ____ the ocean floor.
The probability that the first color is violet and the second is orange, if the first is replaced is?
According to the ipats model (notice the extra letter on the end), if an ecosystem's sensitivity is low, will the environmental impact be higher or lower than a