The alternate interior angles theorem states that alternate interior angles formed when a transversal intersects a pair of parallel lines are congruent. Use the properties of the sine and/or cosine ratios to prove this is true for a rectangle. your answer must include the following: An image or drawing of a rectangle with all side lengths must be identified. Your image must have the diagonal drawn in with the length identified. A pair of alternate interior angles must be identified. Calculations for the values of sine and cosine for both interior angles must have work shown or explained. • Calculation of the measures of the alternate interior angles must have work shown or explained.

Determine ONE of the following values of angle ?, 0 ≤ ?  ≤ 360

3. Name a trigonometric ratio using sin that is equivalent to cos 30°.

2. (6 pts) Sketch and find sine, cosine, and tangent of 240 ° by applying reference angles only. Note 240° 3