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bortniksergei
@bortniksergei
October 2021
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вычислить 3cos180+4sin330-3tg135
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Answers & Comments
Amigo3
1) 3*cos180⁰
=3*(-1)=-3;
2)
4*sin330⁰=4*sin(360-30)=4*(-sin 30)=4*(-0,5)=-2;
3) 3*tg135⁰=3*tg(180-45)=3*(-tg 45)=3*(-1)=-3.
4)
3cos180+4sin330-3tg135=-3-2+3=-2.
Ответ: -2.
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Answers & Comments
2) 4*sin330⁰=4*sin(360-30)=4*(-sin 30)=4*(-0,5)=-2;
3) 3*tg135⁰=3*tg(180-45)=3*(-tg 45)=3*(-1)=-3.
4) 3cos180+4sin330-3tg135=-3-2+3=-2.
Ответ: -2.