Math, asked by vodapelly777, 11 months ago

do this with clear processing paper and send

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Answered by sandy1816

1

Step-by-step explanation:

sin7A+sin3A+2sin5A/sin9A+sin5A+2sin5A

=2sin5Acos2A+2sin5A/2sin7Acos2A+2sin7A

=2sin5A(cos2A+1)/2sin7A(cos2A+1)

=sin5A/sin7A

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