Answer this question......
I will not mark your as brainliest answer
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Answered by
3
Answer:
cos⁴x-sin⁴x = (cos²x+sin²x)(cos²x-sin²x)
= cos²x-sin²x
= 1-sin²x-sin²x
= 1-2sin²x
option a
Step-by-step explanation:
bruh
Answered by
2
your answer is option a..
I have returned to my home.
are you so much busy??
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