talyloly200316 talyloly200316
  • 12-06-2022
  • Mathematics
contestada

cos 50 degrees * sin 40 degrees + sin 50 degrees * cos 40 degrees

Respuesta :

zeldacheree
zeldacheree zeldacheree
  • 12-06-2022

Answer:

hope you can understand

Ver imagen zeldacheree
Answer Link
Аноним Аноним
  • 12-06-2022

Answer:

1

Step-by-step explanation:

Identities to be remembered :

sin θ = cos (90 - θ) or cos θ = sin (90 - θ)

sin² θ + cos² θ = 1

=============================================================

Solving :

⇒ cos 50° × sin 40° + sin 50° cos 40°

⇒ cos 50° cos (90 - 40)° + sin 50° sin (90 - 40)°

⇒ cos² 50° + sin² 50°

⇒ 1

Answer Link

Otras preguntas

A grade has 81 girls and 72 boys. The grade is spilt into groups that have the same ratio of boys to girls as the whole grade. How many girls are in a group tha
What are 3 physical properties of aluminum foil
solve using elimination, 2x+5y=2   3x-5y=53
What is the historical significance of a republic
6 divded by 2/3 = what
6 divded by 2/3 = what
A grade has 81 girls and 72 boys. The grade is spilt into groups that have the same ratio of boys to girls as the whole grade. How many girls are in a group tha
6 divded by 2/3 = what
what are three physical properties of aluminum foil
what is 7/5 as a decimal number