Answer:
it will be c
Step-by-step explanation:
C) (square root 2)/2
In quadrant III, the sine of an angle is positive. The value will be ...
sin(Θ) = √(1 -cos(x)^2) = √(1 -(-√2/2)^2) = √(2/4)
sin(Θ) = (√2)/2
the opposite Angles sum up to give 180
3y +3y = 180
y=30
if y = 30 the x = 55
are you clear?
