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Svet_ta [14]
3 years ago
10

Can u tell me what the answer is plz

Mathematics
1 answer:
yuradex [85]3 years ago
8 0

Answer:

D, B, C, A

Step-by-step explanation:

Solve the equations by combining like terms, isolating the variable, and dividing the equation by the coefficient of the variable.

Doing this, the first equation should be 2, the second equation should be -2, the third equation should be -1, and the last equation should be -6.

Then, we can order them.

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Let's do plus first.  In general, cos x = cos a has solutions x = ±a + 2πk integer k

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We'll write all our solutions as

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