Desigurl
Desigurl
10-02-2019
Mathematics
contestada
PLEASE HELP!!!!!!!!!!!
Respuesta :
5naka
5naka
11-02-2019
by using identity sin²θ=1 - cos²θ
3sin²θ = 4cosθ - 1
3(1 - cos²θ) = 4cosθ - 1
3 - 3cos²θ = 4cosθ - 1
3cos²θ + 4cosθ - 4 = 0
(3cosθ - 2)(cosθ + 2) = 0
cosθ = ⅔
θ = 48.19° or θ = 311.81°
Answer Link
VER TODAS LAS RESPUESTAS ( 61+ )
Otras preguntas
Which underlined word in the sentence is a proper adjective? Jessica likes French toast covered with sweet maple syrup. A. maple B. French C. Jessica D. sw
Which sentence does not contain any errors in the use of italics or quotation marks? A. Carl Sandburg wrote the short poem Fog. B. She can sing every song from
Which sentence uses italics or quotation marks correctly? A. My sister loves "Dream a Little Dream of Me" by The Mamas and the Papas. B. Jake can't sit still wh
Which of the following innovators was most responsible for making the United States a world economic power? A. Guglielmo Marconi B. Samuel Morse C. Heinrich Her
What is the area of the shaded part of the parallelogram? A. 288 m² B. 432 m² C. 444 m² D. 576 m²
Which answer choice has no errors in capitalization? A. "Although, when our parents were younger," Henry added, "All of the televisions were square." B. Roger n
A shoe box holds same-size disks. There are 5 red, 6 white, and 7 blue disks. You pick out a disk, record its color, and return it to the box. If you repeat thi
Identify the man who first tried to build a canal in Panama. A. Ferdinand de Lesseps B. Paul Gaugin C. Lord Bridgewater D. Theodore Roosevelt
Which of the following innovators was most responsible for making the United States a world economic power? A. Guglielmo Marconi B. Samuel Morse C. Heinrich Her
Antagonists are always bad people the opposition good people main characters
