# Trigonometric Identities - Quiz & Card Sort "True or False" (typed solutions)

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This activity practices proving and disproving trigonometric identities using

• double - anlge formula
• half – angle formula
• angle - sum and - difference formulas
• sum - to - product formulas
• product - to - sum formulas

The activity aims to stimulate students interest in history of math and physics as well.

Students are given a set of 16 cards each with two statements written on it – one statement concerns a fact about famous mathematicians and physicists, and the other is a trigonometric identity. The statements are both true or they are both false. Thus, students are challenged to find one and the same answer to two different type questions. If they already know the answer to the text statement on a card, then they have a hint – to prove or disprove the relevant to it trigonometric identity. In case students don’t know whether the stated as a fact on the card is true, verifying the identity will help them in searching the right answer. After students prove or disprove the trigonometric identities, they sort the cards into two groups - “TRUE” and “FALSE”. Recording sheets are provided for students to show all work.

Answer keys and FULL SOLUTIONS(proofs) to the problems are included.

The cards could be used in class practice as a way to check for understanding, a review, cooperative learning, individual practice, partner or group activity, before a quiz on the topic, and more.

This activity is included in my
1) Trigonometric (Expressions, Identities & Equations ) BUNDLE Activities
2) Trigonometric Expressions and Identities BUNDLE
Check out if you are interested in purchasing this resource, along with others, at a discounted rate!

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You might also like these other products on Trigonometric Equations and Expressions available for individual purchase:

1) Proving Trig Identities - Maze "True or False" (full solutions)
2) Simplifying Trig Expressions by Specified Identities-Double-, Half- Angle, Angle Sum&-Difference, Sum&Product Identities 5 Quizzes 40 Problems(full solutions)
3) Simplifying Trigonometric Expressions by Specified Identities - 50 Problems 5 Quizzes (full solutions)
4) Simplifying Trigonometric Expressions - Class Practice/Group/Partner Activity"Which ONE of the expressions doesn't have the same value as the others"(full solutions)
5) Solving Basic Trigonometric Equations - Partner Activity "Make compound words"
6) Solving Trigonometric Equations with Multiple Angles - Quiz or Group Activity
7) Solving Trig Equations by the Square Root Method - Partner "Match & Sort" Activity
8) Solving Trigonometric Equations by Factoring- Quiz Game "Find out the constellation Leo"
9) Solving Trigonometric Equations of Quadratic Type - Individual or Group Quiz "Complete a story of Maths"

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Total Pages
14 pages
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\$4.00