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Step-by-step explanation:
U cannot do like that because we cannot replace the signs of two different terms , we can change the position but with their own signs
i.e. it is cos² - sin² and not
sin² - cos²
Nitinmundhra:
Please mark it brainliest
I am not able to understand that why we are writing cos square first and sin square afterward??
Plzz reply fast
Because we have to go according to the question and it is must to take their signs together
Please mark it brainliest
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