The law of sines is also referred to as sine law and it can be defined as an equation that relates the side lengths of a triangle to the sines of its angles.

<h3>How to calculate the length of PQ?</h3>

Mathematically, the law of sines is given by this equation:

$\frac{sinA}{a} =\frac{sinB}{b} =\frac{sinC}{c}$

Substituting the given parameters into the formula, we have;

$\frac{sin80}{PQ} =\frac{sin42}{4.8} \\\\\frac{0.9848}{PQ} =\frac{0.6691}{4.8}\\\\0.6691PQ = 4.7270\\\\PQ = 4.7270/0.6691$

PQ = 7.1 units.

Read more on law of sines here: brainly.com/question/7922954

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2 years ago

A class must have fewer than 18 students due to the number of desks that can be placed in the classroom. Write an inequality tha

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Answer:

n < 18
n ≥ 15

Step-by-step explanation:

The wording "fewer than" is translated to the math symbol "less than". The variable n represents the number of students.

<em>the number of students</em> is fewer than 18

translates to ...

n < 18

The wording "at least" translates to the math symbol "greater than or equal to."

<em>the number of students</em> is at least 15

translates to ...

n ≥ 15

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2 years ago