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

Bellevue Company has 26,000 units of inventory on hand at December 31. It sold 1,950 units which are in transit and were shipped FOB destination. Bellevue purc
The southernmost point of india is _____(a) indra point( b) Gulf( c) Amaravati(d) jarawas​
Evaluate the expression shown below and write your answer as a fraction in simplest form.
Joe drinks some milk every day. The graph shows the proportional relationship of how many liters of milk Joe drinks to number of days. Find the amount of milk h
look at the image for the question and answers​
Many immigrants in the 1800s arrived by boat at Ellis Island. Which passengers were required to have medical inspections and cross-examinations by Ellis Island
Sebastian received a raise this year so his income climbed from $45,000 to $52,000. Last year Sebastian purchased 2 sunglasses. This year he has purchased 7 sun
riks are only in a person's mind with no firm facts to back them up
help!! I am giving 10 points!!
What was the Philosophy/Point of view/ Goals of the Big Four? Woodrow Wilson David Lloyd George Georges Clemenceau Vittorio Orlando