Math, asked by diya6786, 5 months ago

show that cos^4 π/8 + cos ^4 3π/8+ cos^4 5π/8+ cos^4 9 π/8 =3/8 pls solve it urgently plsss...​

Answers

Answered by gs4900331
0

Answer:

what is this a ..i don't no sorry

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