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

twice a number x,minus 19

George has been looking into buying a bond for his portfolio. His greatest investment objective is total return. Which of the following bonds would be the BEST

Research with infant rats suggests that _____ as a baby may insulate a person from stress as an adult.

In the slideshow Simplifying Radicals, under media in Chapter 9, one specific condition to satisfy is to use the quotient rule. A. True B. False

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous electi

a man-made device that is used to replace or enhance a body part is called what?

Solve this problems: a company has two office building that hold 30000 employees. Their headquarters contains 14 times as many employees as their overseas branc

What concept within object-oriented programming involves the restriction of the manipulation of an object's state by external users to a set of method calls?

Norms, the basic rules of society that help us know what is or is not appropriate in a social situation, govern _____.

The time value of money suggests that $1 in one year from now is worth less than $1 today.True / False.