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irina1246 [14]
3 years ago
11

What is the measurement of angle p? Round your answer to the nearest degree.

Mathematics
1 answer:
Crazy boy [7]3 years ago
7 0

You can use the law sines, which states that in a triangle the ratio between one side length and the sine of the opposite angle is constant.

So, we have

\dfrac{PR}{\sin(Q)}=\dfrac{QR}{\sin(P)}=\dfrac{PQ}{\sin(R)}

In particular, we can use

\dfrac{PR}{\sin(Q)}=\dfrac{QR}{\sin(P)}

to write

\dfrac{68}{\sin(73)}=\dfrac{47.6}{\sin(P)} \iff \sin(P) = \dfrac{47.6\sin(73)}{68}\approx 0.66

Which means

P\approx \arcsin(0.66)\approx 42

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Answer:

Part 1) A=36(\pi-2)\ cm^2

Part 2) P=6(\pi+2\sqrt{2})\ cm

Step-by-step explanation:

Part 1) Find the area

we know that

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A=\frac{1}{4}\pi (12)^{2}-\frac{1}{2}(12)(12)

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Part 2) Find the perimeter

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<em>The circumference of a quarter of circle is equal to</em>

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P=(6\pi+12\sqrt{2})\ cm

simplify

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P=6(\pi+2\sqrt{2})\ cm

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