URGENT! When we solve (cos²x – 1 = 0) by adding and taking the square root, how come we get the same answer when we factor (cos²x – 1) and u

Question

URGENT! When we solve (cos²x – 1 = 0) by adding and taking the square root, how come we get the same answer when we factor (cos²x – 1) and use the zero product property to find the solution?

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Elliana 3 weeks 2021-09-24T04:03:10+00:00 1 Answer 0

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    2021-09-24T04:04:48+00:00

    Answer:

    It is the same answer because you still have the same x-1 and he exponent of 2. It doesn’t matter about the zero unless you are trying to find the angle of a triangle.

    Step-by-step explanation:

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45:7+7-4:2-5:5*4+35:2 =? ( )