An angle in standard position intersects the unit circle at the point (-1/2, -sqrt 3/2). Which set of information about this angle does this point give you?

Question

An angle in standard position intersects the unit circle at the point (-1/2, -sqrt 3/2). Which set of information about this angle does this point give you?

a)sin 7pi/6=-1/2 and cos(7pi/6)=-sqrt3/2
b)cos 7pi/6=-1/2 and sin(7pi/6)=-sqrt3/2
c)sin 4pi/3=- 1/2 and cos(4pi/3)=-sqrt3/2
d)cos 4pi/3=- 1/2 and sin (4pi/3)=-sqrt3/2

Answer 1

An angle in standard position intersects the unit circle at the point (-1/2, -sqrt 3/2). Which set of information about this angle does this point give you?

d) cos (4π/3) = -1/2 and sin (4π/3) = -√3/2