The answer would be 30% , 3% would only be correct if he gave 0.3/10
Answer:
i cant see the image
Step-by-step explanation:
(11,1) because if you plug in x and y this answer is the only one that gives you 18 in the end
The temperature at 5 am was -3 degrees
12-15=-3
Sin angle that equals the 1/2 value is the 30 degree on the 1st Quadrant.
The angle of 30 degree on the 3rd Quadrant is equivalent to (formula and circle in the 1st photo) 180 + 30 = 210°.
So theta = 210° (3rd Quadrant) = 30° (1st Quadrant).

Now just transfer the cos 30° to the 3rd Quadrant and the signal will be negative (as shown in the 2nd photo attached).