Tyson13 Tyson13

01-03-2019
Mathematics

contestada

If cos x=8/17
and 270° < x < 360°
what is cos(2x)⁡?

Respuesta :

LammettHash LammettHash

07-03-2019

It follows immediately from the double angle identity:

[tex]\cos2x=2\cos^2x-1=-\dfrac{161}{289}[/tex]

Answer Link

Otras preguntas

Which is the most accurate description of metals? A. dull and brittle B. non-reactive gases C. liquid at room temperature D. good conductors of electri

How did hitler feel about the treaty of Versailles and its effects on Germany?

Why are you applying for a job with Luby's Fuddruckers? What should I say ??

I need help with this

What would have happened to the men who voted for independence if captured by the British army? A) They would have been deported to England. B) They wou

How the author supports his opinion about washingtons view of peoples freedom and identity

Difference of two squares Calculate this 81-(3x-2)^2 ^2= to the power of 2

please help with this fraction. 6/7 divided by negative -5/6

Which of the following words in English has a connection to the Spanish word pupitre? A) puppet B) puppy C) pupil D) puddle

If an element contains 8 electrons how many electrons will be placed in the 2nd valence shell? 6 2 8 5 11