Math, asked by avadacrucio, 1 year ago

plz help me with this question... Need it as soon as possible..

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Answered by ajayshotia

1

u can use formula sin(A+B)sin(A-B)=sin²A+sin²B

Answered by Naureen13

2

Just convert pi/9 into 2pi/18 & 4pi/8 into 8pi /18

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avadacrucio: if u dont mind could u please send me a clear picture..

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