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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 arithmetic calculations
[1/1 Formula]
Work: Calculate the value of equation -10*0.4*cos120-10*0.3*cos240-20/3*0.2*cos300 .
Question type: Mathematical calculation
Solution:
-10*0.4*cos120-10*0.3*cos240-20/3*0.2*cos300
=-10*0.4*0.814181-10*0.3*cos240-20/3*0.2*cos300
=-10*0.4*0.814181-10*0.3*0.325781-20/3*0.2*cos300
=-10*0.4*0.814181-10*0.3*0.325781-20/3*0.2*-0.022097
=-4*0.814181-10*0.3*0.325781-20/3*0.2*(-0.022097)
=(-3.256724)-10*0.3*0.325781-20/3*0.2*(-0.022097)
=-3.256724-3*0.325781-20/3*0.2*(-0.022097)
=-3.256724-0.977343-20/3*0.2*(-0.022097)
=-3.256724-0.977343-6.666667*0.2*(-0.022097)
=-3.256724-0.977343-1.333333*(-0.022097)
=-3.256724-0.977343-(-0.029463)
=-4.234067-(-0.029463)
=-4.204604
Answer:-10*0.4*cos120-10*0.3*cos240-20/3*0.2*cos300=-4.204604
Note: Radian