Unit Circle Trigonometry
Unit circle
The first quadrant
Angles in the first quadrant
1. Choose two angles in the first quadrant and register the value for their sine and cosine. 2. For each angle, calculate the sine and cosine of their reference angle. 2. Compare those values.
The second quadrant
Reference angles and the second quadrant.
Choose two angles and register their values. What pattern do you see between the values of the angles chosen and their reference angles?
Second quadrant angles conversion in algebra
Write down the relation you found in the previous question using math notation.
Angles in the second quadrant
1. Choose two angles in the second quadrant and register their value for their sine and cosine. 2. For each angle, calculate the sine and cosine of their reference angle. 3. Compare those values.
The third quadrant
Reference angles and the third quadrant
Choose two angles and register their values. What pattern do you see between the values of the angles chosen and their reference angles?
Third quadrant conversion in algebra
Write down the relation you found in the previous question using math notation.
Angles in the third quadrant
1. Choose two angles in the second quadrant and register their value for their sine and cosine. 2. For each angle, calculate the sine and cosine of their reference angle. 3. Compare those values.
The fourth quadrant
Reference angles and the fourth quadrant
Choose two angles and register their values. What pattern do you see between the values of the angles chosen and their reference angles?
Fourth quadrant conversion in algebra
Write down the relation you found in the previous question using math notation.
Angles in the fourth quadrant
1. Choose two angles in the second quadrant and register their values for their sine and cosine. 2. For each angle, calculate the sine and cosine of their reference angle. 3. Compare those values.