# Proving the Addition & Subtraction Formulas for Sine, Cosine & Tangent - Quiz & Worksheet

Instructions:

question 1 of 3

### For which of the following can you use the angle sum and difference identities to help you solve the problem?

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### 2. Which of the following is the identity for cos (x - y)?

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This quiz and attached worksheet will help gauge your understanding of the addition and subtraction formulas for sine, cosine, and tangent. You'll be evaluated on your ability to calculate the identities for sine and cosine.

## Quiz & Worksheet Goals

The quiz questions will measure your ability to:

• Calculate angle sum and difference identities to solve given a problem
• Figure for the sine sum identity for sin
• Understand the identity for cos
• Evaluate other given problems for sine and cosine

## Skills Practiced

This worksheet and quiz let you practice the following skills:

• Reading comprehension - ensure that you draw the most important information from the related addition and subtraction formulas for sine, cosine, and tangent lesson
• Critical thinking - apply relevant concepts to examine information about the identity for cos in a different light
• Practice problems - use acquired knowledge to solve addition and subtraction formulas for sine, cosine, and tangent practice problems
• Knowledge application - use your knowledge to answer a question about the sine sum identity for sin

To learn more about the topic, review the lesson named Proving the Addition & Subtraction Formulas for Sine, Cosine & Tangent. You can pursue these objectives:

• Work through addition and subtraction formulas
• Identify and define angle sum/difference identities
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