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myla18jabbar
22.05.2021 •
Mathematics
If you answer you will be awarded brainless! Yes! That's right! 221 = 17 x what is the value of x?
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Ответ:
x=13
Step-by-step explanation:
17x=221
x=221/17
x=13
If this helps please mark as brainliest
Ответ:
C.360°
E.720°
F.1080
Step-by-step explanation:
Trigonometric Equations
The typical solutions of trigonometric equations are angles that comply with the conditions posed by the equalities. The angle can be expressed in radians or degrees.
Our equation is
And we must find the solutions in the interval from 270° to 810°
The angles that have cosine equal to 1 are 0° plus 360° per turn or cycle. Recall the cosine is an oscillating function whose values are repeated every 360 degrees. Thus, all possible values for x are
x=0°
x=360°
x=720°
x=1080°
We won't try more values since they won't be on the given interval. Negative values are also valid like x=-360° but they are also out of bounds.
We can see that three of the given options are correct:
C.360°
E.720°
F.1080