rainbowlady
rainbowlady
24-05-2017
Mathematics
contestada
Which expression is equivalent to cos120°?
Respuesta :
bellab66bella
bellab66bella
24-05-2017
-1/2,3/2 or 2pie/3 because thats how it is on the unit circle
Answer Link
bcalle
bcalle
24-05-2017
Cos 120 degrees has a reference angle of 60 degrees and it is located in Quadrant II.
Since the reference angle is 60 degrees it will have the same cos as 60 degrees in Q I. Cos 60 = 1/2
In Q II cos is negative so Cos 120 = -1/2
Answer Link
VER TODAS LAS RESPUESTAS ( 52+ )
Otras preguntas
How many 1 by 1 unit cubes would equal the volume of the figure shown.
Are atoms the smallest? Is there maybe, somehow a smaller thing that makes up atoms?
Solve z= 9 over 13 c for c
Booker T. Washington believed that African American accommodation to segregation should be accompanied by
Which type of soil holds the most water? A.silt b. clay c. sand d. loam
Which of the following describes why germany embraced a totalitarian regime in the 1930s? germand accepted the provisions of the treaty of versailles or becaus
Deon needs to memorize words on a vocabulary list for Korean class. He has memorized 30 of the words, which is two-thirds of the list. How many words are on th
What is 4x + 2y = -20 written in slope-intercept form? (Points : 2) y = 2x - 20 y = -4x + 20 y = 20x - 4 y = -2x - 10
If politicians evaluate a domestic policy and grade it as ineffective, what would most likely be the next step?
what is the largest prime factor of 35
