Evaluate the half angle of sine given an angle in radians

The video tutorial covers the half-angle identity for sine, explaining how to apply it and the significance of the plus or minus sign in trigonometric identities. It discusses the importance of understanding quadrants to determine the sign of trigonometric functions. The tutorial also evaluates cosine using the half-angle identity and demonstrates how to simplify complex fractions in trigonometric expressions.

What is the identity for sine of Theta divided by two?

In which quadrant does 5π/6 lie, and how does this affect the signs of sine and cosine?

Explain the significance of the plus or minus in the half angle identities.

How do you evaluate the cosine of 5π/6 using the unit circle?

What steps do you take to simplify a complex fraction in trigonometric identities?