onnee11 onnee11

04-05-2021
Mathematics

contestada

PLEASE HELP MEEEEEEEEE

PLEASE HELP MEEEEEEEEE class=

Respuesta :

sqdancefan sqdancefan

04-05-2021

9514 1404 393

Answer:

A, B

Step-by-step explanation:

The equation is equivalent to ...

cos(x -π/7) = -(√2)/2

x -π/7 = arccos(-(√2)/2) = {3π/4, 5π/4} . . . . . cosine is negative in QII and QIII

x = {3π/4 +π/7, 5π/4 +π/7} +2nπ . . . . . matches A and B

Answer Link

Otras preguntas

What are some echoes of John Locke that are in the Declaration of Independence?

WHICH SENTENCE BEST EXPLAINS THE AUTHORS INTENT IN THIS PASSAGE

11. What is diction? *

In a box of chocolates, 1/5 of the chocolates contain nuts. The rest of the chocolates do not contain nuts. Write down the ratio of the number of chocolates t

Which of the following is equivalent to 5x - x + 3x = 30? A 8x = 30 o 7x = 30 с 3x + 5= 30 x = 30

How much energy does it take to freeze 30.0g of H2O at 0 oC?

Read the excerpt from Hemingway’s A Farewell to Arms. The major was a little man with upturned mustaches. He had been in the war in Libya and wore two wound-str

Hey, Is anyone on here from Grangeville Idaho?

organelles that, using oxygen, convert nutrients into energy that can be used by the cell

Which Order it belongs in