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

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

How can I apply Real Number System in my daily life?

Which most resembles a scientific model? A. computer keyboard B. computer hardware C. computer game D. computer mouse

how is perspiration related to recovery after exercise?

What shape is a parallelogram

think about a bush in your back yard, is the bush alive according to the characteristics of life? why or why not?

Which German journalist wrote about the struggle between the classes and the overthrow of capitalism in his book, Das Kapital? A. Charles Darwin B. Karl Marx C.

Whom did President Nixon choose as his national security adviser? Rachel Carson Leonid Brezhnev Henry Kissinger Gerald Ford

Which words describe the sets of plays during Shakespeare's day? A. shabby, ugly B. expensive, elaborate C. elegant, graceful D. spare, simple

Why did the U.S. support Saddam Hussein and Iraq in the war against Iran in the 1980s? A. The U.S. considered Iran's militant Islam a bigger threat. B. Iraq thr

The basic requirements for industry growth are capital natural resources and workers true or false