myrk
myrk
10-05-2017
Mathematics
contestada
What is the exact value of sin -840
Respuesta :
Аноним
Аноним
10-05-2017
first subtract 2 revolutions from the - 840 :- (- (840-720) = -120
This gives sin -120 which is in the 3rd quadrant of the unit circle
sin -120 = - sin 60 = - sqrt3/2
Answer Link
VER TODAS LAS RESPUESTAS ( 92+ )
Otras preguntas
"It is emphatically the duty of the Judicial Department to say what the law is. Those who apply the rule to particular cases must, of necessity, expound and int
What condition does the following statement describe? Prolonged exposure to pollutants, such as cigarette smoke, degrades the walls of the alveoli, making them
answer math question, 50 pts for brainliest
If you get hints wrong does that deduct from your answer
What does "bon appétit" mean?
CaCO3 is an example of which type of material? Select one: a. mixture b. colloid c. compound d. element
How does carbon’s high valence relate to its ability to form these large and complex biomolecules?
In at least 200 words, discuss how Jonker uses details to develop one of her themes in “The child is not dead”
Write narratives to develop real or imagined experiences or events using effective technique, well-chosen details, and well-structured event sequences. Which
1+1+1+1+1=5 Write addition sentence as a multiplication sentence
