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kow [346]
3 years ago
10

Help please :( help please :( help please :( help please :( help please :( help please :( help please :( help please :( help ple

ase :( help please :( help please :( help please :( help please :( help please :( help please :( help please :( help please :( help please :(

Mathematics
2 answers:
erastova [34]3 years ago
8 0

Answer:

idk

Step-by-step explanation:

marin [14]3 years ago
3 0
The second one t=250d because 5000 divided by 20 =250
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Calculating cos-1 ( help is gladly appreciated :) )
Alekssandra [29.7K]

Answer:

\frac{3\pi}{4}

(Assuming you want your answer in radians)

If you want the answer in degrees just multiply your answer in radians by \frac{180^\circ}{\pi} giving you:

\frac{3\pi}{4} \cdot \frac{180^\circ}{\pi}=\frac{3(180)}{4}=135^{\circ}.

We can do this since \pi \text{ rad }=180^\circ (half the circumference of the unit circle is equivalent to 180 degree rotation).

Step-by-step explanation:

\cos^{-1}(x) is going to output an angle measurement in [0,\pi].

So we are looking to solve the following equation in that interval:

\cos(x)=-\frac{\sqrt{2}}{2}.

This happens in the second quadrant on the given interval.

The solution to the equation is \frac{3\pi}{4}.

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4 0
3 years ago
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