Lesson 4.2 (Sum/Difference/Double)

Last updated over 2 years ago
6 questions
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! You will have a quiz! Notes from this lesson will be on Canvas, with the solutions to these problems! WORK TOGETHER!!!! THIS IS EASY IF YOU WORK THROUGH IT WITH EACH OTHER!!
1

Find the exact value of the expression



hint: rewrite using your double angle identities before you use sum/difference identitites

1

Find the exact value of the expression


1

Find the exact value of the expression


1

1

1

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