Cos(-Θ) = Sqrt2/3
SinΘ<0
What is the value of sin Θ?
A. Sqrt7/3
B.-sqrt7/3
C.sqrt14/7
D.-sqrt14/2
I think it's C
sin^2 + cos^2 = 1
sin^2 + 2/9 = 1
sin^2 = 7/9
sin = ±√7 / 3
SinΘ<0
What is the value of sin Θ?
A. Sqrt7/3
B.-sqrt7/3
C.sqrt14/7
D.-sqrt14/2
I think it's C
sin^2 + 2/9 = 1
sin^2 = 7/9
sin = ±√7 / 3