2Cos²2b - Cos4b = 2Cos²2b - (2Cos²2b - 1) = 2Cos²2b - 2Cos²2b + 1 = 1
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
2Cos²2b - Cos4b = 2Cos²2b - (2Cos²2b - 1) = 2Cos²2b - 2Cos²2b + 1 = 1