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bekas
[8.4K]
3 years ago
7
Solve cos x + rad 2 = -cos x for over the interval [0, 2pi ]
Mathematics
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1
answer:
Kamila
[148]
3 years ago
6
0
The cosine function is negative in 2nd and 3rd quadrants, So you know that you will have 2 solutions. One between pi/2 and pi, the other between pi and 3pi/2.
Refer to a unit circle to find that
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