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Zielflug [23.3K]
2 years ago
11

Cos^-1(cos 43°) PLEASE HELP ME

Mathematics
2 answers:
ValentinkaMS [17]2 years ago
5 0

\cos^{-1}(\cos 43^{\circ})=43^{\circ}\\\\\\\text{In radians,}~~ \dfrac{43\pi}{180}

yulyashka [42]2 years ago
4 0

\:  \:  \:  \:  \:

=  \cos(1)  \cos(43°) \\  \\ in \:  \: alternate \:  \: form \:  \\  \\  = 0.395152

<h2 />

Step-by-step explanation:

\cos( - 1)  ( \cos(43°))

  • <u>simplify</u><u> the</u><u> expression</u><u> </u><u>us</u><u>i</u><u>Ng the </u><u>symmetry</u><u> of</u><u> </u><u>trigonometry</u>

<u>=  \cos(1)  \cos(43°) \\  \\  \\ or \:  \: in \:  \: alternate \:  \: form \\  \\  = 0.395152</u>

<h2><u>hope</u><u> it</u><u> helps</u></h2>
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o-na [289]

The equation of this sinusoidal function is either

f(x) = a sin(bx) + c

or

f(x) = a cos(bx) + c

Either way, the plot of f9x) has amplitude a, period 2π/b, and midline y = c.

If the period is π/2, then

2π/b = π/2   ⇒   b = 4

If the maximum value is 10 and the minimum value is -4, then

-4 ≤ a sin(4x) + c ≤ 10

-4 - c ≤ a sin(4x) ≤ 10 - c

-(4 + c)/a ≤ sin(4x) ≤ (10 - c)/a

Recall that sin(x) is bounded between -1 and 1. So we must have

-(4 + c)/a = -1   ⇒   a = c + 4

(10 - c)/a = 1   ⇒   a = -c + 10

Combining these equations and eliminating either variable gives

a + a = (c + 4) + (-c + 10)   ⇒   2a = 14   ⇒   a = 7

a - a = (c + 4) - (-c + 10)   ⇒   0 = 2c - 6   ⇒   c = 3

Finally, we have either

f(x) = a sin(bx) + c   ⇒   f(0) = c = 3

or

f(x) = a cos(bx) + c   ⇒   f(0) = a + c = 3

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8 0
2 years ago
HELP DUE IN 30 MINS!
zepelin [54]

Answer:

<u>Use sine for this</u>

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8 0
3 years ago
Read 2 more answers
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Ilya [14]

Answer:

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Step-by-step explanation:

<u>Function modeling</u>

Real-life situations often require the help of mathematics to model numerically what happens when the variables involved can change. It could even be used to predict some expected outcomes from those models.

The problem states Janice receives $.40 per pound when he recycles less or equal than 99 pounds of aluminum. If x is the number of recycled pounds, then the amount of money he receives is

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We also know that if he recycles more than 100 pounds of aluminum, the pay increases to $0.5 per pound. In that case, the amount of money is

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This is a case where the function is defined differently depending on the conditions of the input variable x. It's called a piecewise function. The function can be written as

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Answer:

see explanation

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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