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4 November, 14:00

Sin97cos43+cos97 sin43

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Answers (1)
  1. 4 November, 16:21
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    sin 40

    Step-by-step explanation:

    We know,

    sinA cosB + cosA sinB = sin (A+B) [Formula]

    Here,

    A=97; B = 43

    Now,

    sin97cos43+cos97 sin43

    = sin (97+43)

    =sin 140

    =sin (180-40) [sin (180-A) = sinA; here A = 40]

    =sin 40
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