Lesson 4.2: Sum/Difference/Double and Pythag A4

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Watch the video below until the time 4:39, then answer the questions. Make sure you review the formula sheet at the end before next class!

Find the exact value of the expression
hint: rewrite using your double angle identities before you use sum/difference identitites

Find the exact value of the expression

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Watch the video until the time 3:05, then answer the questions. Make sure you review the formula sheet at the end before next class! You will have a quiz!

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Make sure you have all of your formulas memorized for your formula quiz next class! You will not need to know Half-Angle Formulas

Lesson 4.2: Sum/Difference/Double and Pythag A4

Find the exact value of the expression hint: rewrite using your double angle identities before you use sum/difference identitites

Find the exact value of the expression

Lesson 4.2: Sum/Difference/Double and Pythag A4

Find the exact value of the expression hint: rewrite using your double angle identities before you use sum/difference identitites

Find the exact value of the expression

Find the exact value of the expression

Find the exact value of the expression

Find the exact value of the expression
hint: rewrite using your double angle identities before you use sum/difference identitites

Find the exact value of the expression
hint: rewrite using your double angle identities before you use sum/difference identitites