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 ( 94+ )
Otras preguntas
Will mark as Brainliest. This diagram would represent the enthalpy changes in which of the following? cold pack hot pack melting solid boiling liquid
Why are seedless vascular plants considered paraphyletic rather than monophyletic? a.some of the groups within the seedless vascular plants (equisetophyta and p
can you add a negative and a positive when doing like term
Which best explains why openness is important
am I right on this answer
Identify the essential element missing from the following topic sentence. Giving holiday gifts can be expensive! A. controlling idea B. limited topic C. co
the axis is symmetry for the function f(x) = -x^2-10+16 is x=-5.....
Suppose you and your friends go out for dinner. at the end of the meal, your server asks you to fill out a comment card about your dining experience and hand it
The phenomenon where one in every five americans will be elderly.
Which of these criteria distinguishes a fear from a phobia?
