what is cos 4 theta（関連順）

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यदि sin 5 theta = cos 4 theta जहाँ 5 theta तथा 4 theta न्यून कोणहै , तो theta का मान ज्ञात करो...

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if sin theta-cos theta=0 then sin^(4)theta+cos^(4)theta=? if sina-cosa=0 find sin4a+cos4a

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"`1-8 cos ^(2) theta + 8 cos ^(4) theta=`A)`sin 4 theta`B)`cos 4 theta`C)`sin ^(4) theta + cos ^(4)

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`cos4theta=cos2theta`

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結果 : what is cos 4 theta