zel117
23.04.2021 •
Mathematics
Which of the following are identities? Check all that apply.
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Ответ:
b. cos²3x - sin²3x = cos6x
if its wrong sorry
hope this helps you☺️☺️
Ответ:
B and D
Step-by-step explanation:
B.cos²3x-sin²3x=cos6x ( as cos²a -sin² a = cos 2a)
D.(sinx+cosx)²=sin²x+cos²x+2sinxcosx=1+sin2x
Ответ:
what kind homework is that? What is name of is✌
Step-by-step explanation: