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terminator13500
@terminator13500
July 2022
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Найдите sin256, если sin38= a .
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ник3709
Sin256°= sin(180° + 76°)=-sin76°=
= - 2sin38°cos38°= -2a Vcos^2 38°=
=-2aV1-sin^2 x=-2aV1-a^2.
V знак корня квадратного
2 votes
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Answers & Comments
= - 2sin38°cos38°= -2a Vcos^2 38°=
=-2aV1-sin^2 x=-2aV1-a^2.
V знак корня квадратного