Nischitha. j Asked a Question
July 29, 2020 4:57 pmpts 30 pts
Examples: Evaluate: sin x cos x dx Solution. Let I = sin x cosx dx = | sin x(sin x cos x)dx - fsin? x sin 2x dx 4 1-cos 2x 1-cos 4x dx 2 2 (1-cos 4x - cos 2x + cos 4x cos 2x) dx 16 (1-6 E x by 2 = 1 (2-2 cos 4x-2 cos 2x+2 cos 4x cos 2x) dx (2-2 cos 4x -2 cos 2x+cos 6x+ COs 2x) dx (2-cos 2x -2 cos 4x +cgs 6x) dx sin 2x sin4x sin 6x +C 2x 2 32 2 6 citive integers then change in multiple angles with t ,I didn't understand the underlined syep
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  • Deepak singh Best Answer
    apply the formula
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    Deepak singh
    apply cosa + cos b formula in underlined step
  • Pranav kumar thankyou
    see the attachment.
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  • Vishal goswami
    formula 2cosA.cosB = cos(A+B)+cos(A-B)
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  • Deepak singh
    see
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