Double-Angle Identities: Uses & Applications


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question 1 of 3

How many double-angle identities are there?

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1. Which of the following is an example of a double angle?

2. Prove that (sin (2x))/2 = sin (x) cos (x).

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About This Quiz & Worksheet

The questions on the quiz will mainly ask you to identify double angle identities, whether it be examples of the concept or the number of identities. You will also need to prove a mathematical equation and simplify some other mathematical expressions.

Quiz & Worksheet Goals

The assessment will test your understanding of the following concepts:

  • The meaning of sine, cosine, and tangent
  • The definition of double angles
  • Proofs involving double angle identities

Skills Practiced

The quiz will help you practice the following skills:

  • Problem solving - use acquired knowledge to prove a double angle identity
  • Interpreting information - verify that you can read information regarding the number of double angle identities and interpret it correctly
  • Distinguishing differences - compare and contrast topics from the lesson, such as sine and cosine
  • Information recall - access the knowledge you've gained regarding examples of double angles

Additional Learning

These assessments have an accompanying lesson entitled Double-Angle Identities: Uses & Applications can provide you with further information on this topic. Browse the lesson to learn the following in a fun and engaging way:

  • Analyzing the relationships between trigonometry, sine, cosine, and tangent
  • Exploring the double angle identities
  • Demonstrating using the double angle identities to simplify equations