Write the sum and difference formula as a single trigonometric function

The video tutorial guides students through identifying and solving trigonometric equations, focusing on distinguishing between sine, cosine, and tangent. The teacher emphasizes the cosine formula for addition and subtraction of angles, using an example to demonstrate how to solve for angles X and π/7. The lesson concludes with a single trigonometric equation, highlighting the importance of recognizing and applying the correct formula.

Which trigonometric functions are considered in the initial problem?

• Sine, Cosine, and Tangent

• Sine and Tangent

• Cosine and Tangent

• Only Sine

What is the main focus of the cosine formula discussed?

• Addition of angles

• Multiplication of angles

• Division of angles

• Subtraction of angles

What is the correct interpretation of the cosine formula in this context?

• Cosine of the difference of two angles

• Cosine of the sum of two angles

• Cosine of a single angle

• Cosine of the product of two angles

What are the two angles identified in the final equation?

• X and π/4

• X and π/6

• X and π/7

• X and π/8

What is the final form of the trigonometric equation discussed?

• Cosine of X - π/7

• Sine of X + π/7

• Cosine of X + π/7

• Tangent of X + π/7