Answer:
Side A is 4
Step-by-step explanation:
its step 2 he did not subtract it right hope this helps and have a great day and get some sleep lol
Answer:
Reference angle will be 30°
sin(330°) will be equal to 
cos(330°) will be equal to 0.866
Step-by-step explanation:
We have given angle is 330°
As the angle
is in forth quadrant
We know that in forth quadrant the reference angle is given by
Reference angle 
As the angle is 330°
So the reference angle will be 
Now we have to find the value of
sin(330°) 
And now 
It would be negative 5 since it is going down.