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Кросс17
@Кросс17
June 2022
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Вычислите значения выражений:
3tg 3П/4 * cos 3П/4 - sin 3П/4 +2
3sin60градусов * cos60 +2cos90 *tg45 -3
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sedinalana
3tg 3П/4 * cos 3П/4 - sin 3П/4 +2 =3*(-1)*(-
√2/2)-√2/2+2=√2+2
3sin60градусов * cos60 +2cos90 *tg45 -3=3*
√3/2*1/2+2*0*1-3=3√3/4-3=
=3(√3-4)/4
4 votes
Thanks 4
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Answers & Comments
3sin60градусов * cos60 +2cos90 *tg45 -3=3*√3/2*1/2+2*0*1-3=3√3/4-3=
=3(√3-4)/4