Evaluate trig functions without using a calculator using cofunction identities

The video tutorial covers trigonometric functions, focusing on sine and cosine, and their properties. It explains cofunction identities, using the unit circle to understand angle relationships, and solving trigonometric problems. The tutorial also explores tangent and cotangent functions, emphasizing the importance of understanding these concepts for problem-solving in trigonometry.

Explain the relationship between cosine of 90 minus theta and sine of theta.

What is the sine of 60 degrees?

What is the cosine of 60 degrees and how does it relate to sine of 30 degrees?

What are complementary angles and how do they relate to trigonometric functions?

What are the co-function identities for sine and cosine?

How can you find the tangent of 60 degrees using sine and cosine?

Describe how to rationalize the denominator when finding cotangent.