Evaluating the composition of cosine and sine inverse

The video tutorial covers the assessment of homework through quizzes, focusing on trigonometric concepts such as sine inverse and cosine. It explains the conversion between radians and degrees, simplifying trigonometric expressions, and evaluating cosine values. The teacher engages with students, emphasizing the importance of understanding the unit circle and coordinates. The session concludes with a recap of the key points discussed.

What is the sine inverse of 1/2 and what angle does it represent?

How do you convert 30 degrees to radians?

What is the cosine of π/3 and what does it represent on the unit circle?

Explain the significance of the X coordinate in relation to cosine on the unit circle.

What is the relationship between π/6 and π/3 in terms of their positions on the unit circle?