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Rinnam
@Rinnam
July 2022
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в треугольнике АВС угол С=90°, АВ=26см, тангенс угла А=2,4. найти АС.
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полина1633
Вроде так:
1/cos^2(a)=1+tg^2(a)
1/cos^2(a)=6,76
cos^2(a)=1/6.76
cos(a)=1/2,6
cos(a)=AC/AB
AC=26/2.6=10
Ответ: 10
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Rinnam
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Answers & Comments
1/cos^2(a)=1+tg^2(a)
1/cos^2(a)=6,76
cos^2(a)=1/6.76
cos(a)=1/2,6
cos(a)=AC/AB
AC=26/2.6=10
Ответ: 10