Tyson13
Tyson13 Tyson13
  • 01-03-2019
  • Mathematics
contestada

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

Respuesta :

LammettHash
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

what are two reasons you change the tone of a story for?
what is the value of a in the following equation: -a = 3a + 8? A) 2 B) 4 C) -2 D) -4
SOMEONE HELP ME PLEASE [ 20 POINTS] SERIOUS ANSWERS ONLY
what is the molar ratio of Li to N2 in the given reaction? 6Li+N2 —> 2Li3N
NATO was formed to A) encourages allies to supply military goods to the United States B) ensure mutual protection from communism C) bolster the global US mil
WILL GIVE BRAINLIEST! Which of these forms after the production of a zygote? embryo gastrula fetus blastula
What is meant by randomization in the context of an economic​ experiment? a. subjects are assigned by​ chance, rather than by​ choice, to a group. b. subjects a
[PLEASE HELP](SERIOUSLY!!) :( Shopping! We can use unit price for a variety of products you buy everyday. Suppose we are buying soda but we have different opti
Help PLZZZZZZZ:)))))
____ is a communicable disease because it can be spread from one person to another. Tetanus; Diabetes; Parkinson’s; Influenza