find another angle ϕ between 0∘ and 360∘ that has the same cosine as 71∘. (that is, find ϕ satisfying cos(ϕ)=cos(71∘).) ϕ= degrees. help (numbers)

Answers

Answer 1

Answer: Another angle ϕ between 0∘ and 360∘ that has the same cosine as 71∘ is approximately 288.99∘.

Step-by-step explanation:

To obtain another angle ϕ between 0∘ and 360∘ that has the same cosine as 71∘, we can use the fact that the cosine function has a period of 360∘.

This means that the cosine of an angle and the cosine of that angle plus a multiple of 360∘ are equal.

To obtain ϕ, we can use the following formula: cos(ϕ) = cos(71∘ + 360∘k) where k is an integer.

We want to get the smallest positive value of k that gives an angle between 0∘ and 360∘.

Using a calculator, we can obtain the cosine of 71∘:cos(71∘) ≈ 0.309.

Now we can solve for ϕ:cos(ϕ) = cos(71∘ + 360∘k)ϕ = ±acos(cos(71∘ + 360∘k))

We want to get the value of k that makes ϕ between 0∘ and 360∘.

Since cos(71∘) is positive, we can take the positive value of the arccosine function:ϕ = acos(cos(71∘ + 360∘k))

We can use a table of cosine values to find the value of ϕ. Since cos(71∘) is positive, ϕ is either in the first or fourth quadrant. In the first quadrant, ϕ is equal to 71∘.

In the fourth quadrant, the cosine function is positive between 270∘ and 360∘, so we can add 360∘k to 71∘ to get a positive angle:ϕ = acos(cos(71∘ + 360∘k)) ≈ 288.99∘

Therefore, another angle ϕ between 0∘ and 360∘ that has the same cosine as 71∘ is approximately 288.99∘.

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(1, 2 )

Step-by-step explanation:

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Answer:

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Answer:

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Step-by-step explanation:

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Answer:

X<8

Step-by-step explanation:

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Answer:

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