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

The vertices A(-2,-1), B(-3, 2), C(-1, 3), and D(0, 0) form a parallelogram. The vertices A'(-1, -2), B'(2, -3), C'(3,-1), and D'(0, 0) are the image of the par

3x10^-2 divided by 8x10^-1

Match the graph with the correct set of equations for the linear system. Then, classify the system as Consistent and Dependent, Consistent and Independent, or I

how many colors are actually man made?

5. Leslie and her younger sister Bianca go to the same high school. Bianca is having a tough time in algebra and asks her older sister for help studying-specifi

Asif wants to rewrite 28+49 using the greatest common factor and the distributive property

El ser humano es el culpable de que la altmosfera acumule cada vez mas gases de lo que provocan el efecto invernadero?

Which is a benefit of genetic counseling?

PLS HELP ME, PLS THIS IS DUE FIRST CORRECT ANSWER GETS BRAINLIEST

How do you say "job application" in korean?