How to solve a trigonometric equation using sum and difference identities

The video tutorial covers the sum and difference of angles, emphasizing the importance of using brackets to avoid mistakes in subtraction. It demonstrates how to combine like terms in equations and evaluates trigonometric functions such as sine and cosine. The tutorial concludes with solutions and a brief discussion on the topic.

What is the value of sine of π/2 and how does it affect the equation?

Describe the process of finding the solutions for cosine equal to sqrt(3)/2.