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 ( 82+ )
Otras preguntas
Spinach and cabbage are _____. 1. the leaves of plants 2.the fruit of plants 3.the buds of immature flowers
Which of these motives did not lead to the crusades? a. the desire for military adventure b. the desire to gain riches and land c. the prevalence of religious f
i need help on this anyone plz. no joking around tho.
Explain why culture is considered a possible cause of developing an eating disorder.
how did franklin d roosevelt’s new deal coalition affect african american voting patterns
What would the earth be like without gravity?
spanish 3 honors homework Antonia quiere hacer una pintura acuarela. Esta es la primera vez que va a pintar. No está segura de las herramientas que necesite. El
Identify the use of the italicized noun clause. "The reason I am late is that I had failed to set the alarm." (choose one) -direct object -subject -subject c
When did Uganda get her independence
-2x-1 is less than or = to 5