Question 7 (Multiple Choice)

If [tex]\(\sin x^{\circ} = \frac{4}{5}\)[/tex], what is the value of [tex]\(b\)[/tex]?

A. [tex]\(b = 4\)[/tex]
B. [tex]\(b = 5\)[/tex]
C. [tex]\(b = 6\)[/tex]
D. [tex]\(b = 7\)[/tex]



Answer :

To solve the problem, we begin with the given information that [tex]\(\sin x^{\circ} = \frac{4}{5}\)[/tex].

Recall that for a right-angled triangle, the sine of an angle [tex]\(x\)[/tex] is given by the ratio of the length of the opposite side to the hypotenuse:

[tex]\[ \sin x = \frac{\text{opposite}}{\text{hypotenuse}} \][/tex]

Given that [tex]\(\sin x^{\circ} = \frac{4}{5}\)[/tex], we can identify the following:

- The opposite side to angle [tex]\(x\)[/tex] is 4.
- The hypotenuse of the triangle is 5.

From this, it is clear that the values corresponding to the sides are:

- Opposite side = 4
- Hypotenuse = 5

Therefore, the value of [tex]\(b\)[/tex] that fits this context (from the given choices) is:

[tex]\[ b=4 \][/tex]
[tex]\[ b=5 \][/tex]
[tex]\[ b=6 \][/tex]
[tex]\[ b=7 \][/tex]

Comparing with the choices provided, the correct value of [tex]\(b\)[/tex] when [tex]\(\sin x^{\circ} = \frac{4}{5}\)[/tex] is:

[tex]\[ b = 5 \][/tex]