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Two teams are pulling a heavy chest located at point [tex]\(X\)[/tex]. The teams are 4.6 meters away from each other. Team A is 2.4 meters away from the chest, and Team B is 3.2 meters away. Their ropes are attached at an angle of [tex]\(110^{\circ}\)[/tex].

Law of sines: [tex]\(\frac{\sin (A)}{a}=\frac{\sin (B)}{b}=\frac{\sin (C)}{c}\)[/tex]

Which equation can be used to solve for angle [tex]\(A\)[/tex]?

A. [tex]\(\frac{\sin (A)}{2.4}=\frac{\sin (110^{\circ})}{4.6}\)[/tex]

B. [tex]\(\frac{\sin (A)}{4.6}=\frac{\sin (110^{\circ})}{2.4}\)[/tex]

C. [tex]\(\frac{\sin (A)}{3.2}=\frac{\sin (110^{\circ})}{4.5}\)[/tex]

D. [tex]\(\frac{\sin (A)}{4.6}=\frac{\sin (110^{\circ})}{3.2}\)[/tex]


Sagot :

To solve this problem, we need to apply the Law of Sines, which states:

[tex]\[ \frac{\sin (A)}{a} = \frac{\sin (B)}{b} = \frac{\sin (C)}{c} \][/tex]

First, let's define the terms:

- [tex]\( a \)[/tex], [tex]\( b \)[/tex], and [tex]\( c \)[/tex] are the lengths of the sides opposite to angles [tex]\( A \)[/tex], [tex]\( B \)[/tex], and [tex]\( C \)[/tex] respectively.
- [tex]\( A \)[/tex] is the angle opposite to team A's position relative to the chest.
- The known angle is [tex]\( 110^\circ \)[/tex], which we will denote as [tex]\( \angle C \)[/tex].

Given data:
- Distance between the teams: 4.6 meters (this will be opposite the [tex]\( 110^\circ \)[/tex] angle)
- Distance from Team A to the chest: 2.4 meters (this will be the side [tex]\( a \)[/tex])
- Distance from Team B to the chest: 3.2 meters

By the problem statement and the Law of Sines, we need to match the ratio involving [tex]\( \sin (A) \)[/tex] with the given sides and angles.

Among the given options, the correct way to set up the equation using the Law of Sines is to relate [tex]\( \sin A \)[/tex] and [tex]\( \sin 110^\circ \)[/tex]:

[tex]\[ \frac{\sin (A)}{a} = \frac{\sin (110^\circ)}{4.6} \][/tex]

Here, side [tex]\( a = 2.4 \)[/tex] meters. Therefore, the equation is:

[tex]\[ \frac{\sin (A)}{2.4} = \frac{\sin (110^\circ)}{4.6} \][/tex]

Thus, the correct equation that can be used to solve for angle [tex]\( A \)[/tex] is:

[tex]\[ \frac{\sin (A)}{2.4} = \frac{\sin (110^\circ)}{4.6} \][/tex]
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