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gladu [14]
2 years ago
12

Solve 2 cos ø + 2=3 in the interval from 0 to 2 π.Round to the nearest hundredth.

Mathematics
1 answer:
fomenos2 years ago
3 0

Answer:

The value of ∅ for the given trigonometrical equation is 60° .

Step-by-step explanation:

Given as :

The Trigonometrical equation

2 cos∅ + 2 = 3

<u>Now, Solving this equation to get the value of ∅</u>

∴ The equation can be written as

2 cos∅ = 3 - 2

or , 2 cos∅ = 1

or , cos∅ = \dfrac{1}{2}

∴ ∅ = cos^{-1}(\frac{1}{2})

I.e ∅ = 60°

So,The value of ∅ for the given trigonometrical equation = ∅ = 60°

Hence, The value of ∅ for the given trigonometrical equation is 60° . Answer

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ludmilkaskok [199]

Answer:a = - 2

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Step-by-step explanation:

a + 5b - c = - 20 - - - - - - - - - 1

4a - 5b + 4c = 19 - - - - - - - - - 2

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Adding equation 1 and equation 2, it becomes

- 6c = - 18

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Multiplying equation 2 by 1 and equation 3 by 4, it becomes

4a - 5b + 4c = 19

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Adding both equations, it becomes

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Substituting b = - 3 and c = 3 into equation 1, it becomes

a + 5 × - 3 - 3 = - 20

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5 0
3 years ago
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Step-by-step explanation:

8 0
3 years ago
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