if A,B, C,D be the angles of a quadrilateral then prove that sin A + Sin ( B, C,D)= 0​

Question

if A,B, C,D be the angles of a quadrilateral then prove that sin A + Sin ( B, C,D)= 0​

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Ximena 2 months 2021-07-30T03:35:34+00:00 1 Answers 0 views 0

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    2021-07-30T03:37:07+00:00

    Answer:

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