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

__________was the nickname of the region in the US effected by the drought during the Great Depression.

What kind of business organization is easy to start and stop and involves sharing the workload, profits, and responsibilities? A. sole proprietorship B. Partne

Rewrite this complex sentence as two simple sentences. Dennis washed his hands because they were muddy.

Identify the sentence type. And yet, that awful tiger, those shrieks, that blood! A. simple B. compound C. complex D. compound-complex E. fragment

Which measure of central tendency is most affected if an outlier is present? and why?

what role did Russia play in the Vietnam war

Tanida wants to buy a new circular rug for her rectangular bedroom. The area of her room is 120 ft. The radius of the rug is 5ft. Does Tanida have enough space

What type of artists are there?

THIS QUESTION IS BASED ON OPINION! Answer this question if you fish : What is your favorite fish to catch and why? "social studies" - Socially interacting.

Chef Alonso is creating a recipe with the following ingredients: 1 pound of chicken, 3 1/3 cups of tomato sauce, 1 1/3 teaspoons of oregano and 2/3 teaspoons of