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boltsasha
@boltsasha
July 2022
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упростите тригонометрическое выражение:
sin2x·cosx+cos2x·sinx
___________________
cos5x·cos2x+sin5x·sin2x
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belozerova1955
По основным тригонометрическим формулам:
sin(2x+x) sin 3x
= ------------------ = --------------- = tg 3x
cos (5x-2x) cos 3x
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boltsasha
это все решение?
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Answers & Comments
sin(2x+x) sin 3x
= ------------------ = --------------- = tg 3x
cos (5x-2x) cos 3x