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

-2 squared x (-1/2) + 8 /(-2 squared)

The volume or intensity of a sound wave is measured by the size of the _________ and reported in decibels. A) amplitude B) frequency C) trough D) wavelength

I WILL GIVE YOU BRAINLIEST IF YOU HELP ME PLZZwhich sentence reflects the theme of invictus by william ernest henley?A one must face hardship and pain with reso

Medical imaging is used for what? O marking anatomical planes o identifying anatomical position o observing bilateral symmetry O taking pictures of structures i

An expression is shown. 12 + 6x3 – 7x – 2y Select the all the statements about the expression that are true. A The expression has six terms. B The 5 is an expon

3x−8/2 =x−6 im really confused

2.36 LAB: Warm up: Variables, input, and casting (1) Prompt the user to input an integer, a double, a character, and a string, storing each into separate variab

you own 100 shares in each of three companies, each company pays a dividend. gillete pays 1.15 per share in dividends, general electric pays .79 per share in di

Who was the President of the United States at this time? What role did he play?

what is x if 2x+7 + 13 is equal to 3x