Question

cos$cos^{4} \frac{a}{2} - sin^{4} \frac{a}{2} = cos A$4 A/2 - sin^4 A/2 = Cos A

Answer 1

Answer:

to kaisa hai aap laog

ohh answer chahiye lo vo bhi lo yaar ,

sin4A-cos4A

=(sin²A)²-(cos²A)²

=(sin²A-cos²A)(sin²A+cos²A)

=sin²A-1+sin²A

=2sin²A-1

CHAALO AB JATE JATE BRAINLIEST +THANKS KI DOSE DEDO TAKI SUBAH TAK SOTA RAHOO MAIN

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