allyssazhr allyssazhr
  • 02-04-2017
  • Mathematics
contestada

how do you prove the identities?

1) 1- cos²Θ ≡ sin²Θ
2) (1-sin²Θ) tanΘ≡ cosΘ sinΘ

Respuesta :

ghanami
ghanami ghanami
  • 02-04-2017
hello :
1) 1- cos²Θ ≡ sin²Θ
cos²Θ + sin²Θ = 1
  sin²Θ = 1- cos²Θ


2) (1-sin²Θ) tanΘ≡ cosΘ sinΘ
 by 1) :
1-sin²Θ =cos²Θ
cos²Θ × tanΘ = cos²Θ × (sinΘ)/(cosΘ) =cosΘ sinΘ

Answer Link

Otras preguntas

why can parents who are heterozygous for type a and type b blood have children with any of the four human blood types?
How did Alexander the Great rise to power and how did he spread Greek culture to other lands?
How did Alexander the Great rise to power and how did he spread Greek culture to other lands?
What sorts of signals does the brain use to communicate sensations, thoughts and actions?
The gases in the air attracted to earth by gravity form layers called the ____
how is the expression of sex linked genes both  similar to and different from the expression of autosomal genes?
How do you work out the problem 84 divided by4
Newtons third law of motion is also known as the law of ?
the area of a triangle is 41 yards to the second power with a base of 5 yard what is the height in yard
The gases in the air attracted to earth by gravity form layers called the ____