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kolbaska11 [484]
3 years ago
10

Type the correct answer in the box. Round off your answer to the nearest integer.

Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

59°

Step-by-step explanation:

In triangle DAB, by Pythagoras theorem:

DB= \sqrt {6^2 +5^2} =\sqrt{36+25}=\sqrt{61}

Next, in triangle DCB, by Pythagoras theorem:

DB= \sqrt {(\sqrt {61} )^2 - 4^2} =\sqrt{61-16}=\sqrt{45}

Now, by sin rule.

\frac{ \sin \: p}{ \sqrt{45} }  =  \frac{ \sin 90 \degree}{ \sqrt{61} }  \\  \\ \frac{ \sin \: p}{ 6.70820393}  =  \frac{ 1}{ 7.81024968 }  \\  \\ \sin \: p =  \frac{ 6.70820393}{7.81024968}  \\  \\ \sin \: p = 0.858897501 \\  \\p = 59.19301883 \degree \\  \\ p  \approx 59 \degree

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