What are the input and output values for determining the sine of [tex]60^{\circ}[/tex]?

A. Input: [tex]\frac{2}{\sqrt{3}}[/tex]; Output: [tex]60^{\circ}[/tex]
B. Input: [tex]60^{\circ}[/tex]; Output: [tex]\frac{\sqrt{3}}{2}[/tex]
C. Input: [tex]60^{\circ}[/tex]; Output: [tex]\frac{2}{\sqrt{3}}[/tex]
D. Input: [tex]\frac{\sqrt{3}}{2}[/tex]; Output: [tex]60^{\circ}[/tex]



Answer :

Certainly! Let's proceed step-by-step to address the given question, which includes both the sine function and its inverse.

### Sine Function and Its Inverse

1. Sine of [tex]\(60^{\circ}\)[/tex]

The sine function is defined for an angle [tex]\(\theta\)[/tex] as [tex]\(\sin(\theta)\)[/tex]. For [tex]\(\theta = 60^{\circ}\)[/tex]:

[tex]\[ \sin(60^{\circ}) = \frac{\sqrt{3}}{2} \][/tex]

2. Inverse Sine (Arcsine) Function

The inverse sine function, [tex]\(\sin^{-1}(x)\)[/tex] or [tex]\(\arcsin(x)\)[/tex], gives the angle whose sine is [tex]\(x\)[/tex].

For the input [tex]\(\frac{\sqrt{3}}{2}\)[/tex]:

[tex]\[ \arcsin\left(\frac{\sqrt{3}}{2}\right) = 60^{\circ} \][/tex]

### Evaluating the Options

Now, let's evaluate the provided options:

1. Option 1: Input [tex]\(\frac{2}{\sqrt{3}}\)[/tex]; Output [tex]\(60^{\circ}\)[/tex]

The input value [tex]\(\frac{2}{\sqrt{3}}\)[/tex] is not a standard sine value of [tex]\(60^{\circ}\)[/tex]. Thus, this option is incorrect.

2. Option 2: Input [tex]\(60^{\circ}\)[/tex]; Output [tex]\(\frac{\sqrt{3}}{2}\)[/tex]

As we calculated above:

[tex]\[ \sin(60^{\circ}) = \frac{\sqrt{3}}{2} \][/tex]

This option is correct.

3. Option 3: Input [tex]\(60^{\circ}\)[/tex]; Output [tex]\(\frac{2}{\sqrt{3}}\)[/tex]

This output [tex]\(\frac{2}{\sqrt{3}}\)[/tex] does not match the actual sine value of [tex]\(60^{\circ}\)[/tex]. Thus, this option is incorrect.

4. Option 4: Input [tex]\(\frac{\sqrt{3}}{2}\)[/tex]; Output [tex]\(60^{\circ}\)[/tex]

Using the arcsine function:

[tex]\[ \arcsin\left(\frac{\sqrt{3}}{2}\right) = 60^{\circ} \][/tex]

This option is correct.

### Conclusion

The correct input and output pairs for determining the sine of [tex]\(60^{\circ}\)[/tex] and its inverse are:

- Input: [tex]\(60^{\circ}\)[/tex]; Output: [tex]\(\frac{\sqrt{3}}{2}\)[/tex]
- Input: [tex]\(\frac{\sqrt{3}}{2}\)[/tex]; Output: [tex]\(60^{\circ}\)[/tex]

Thus, the correct options are:

- Input: [tex]\(60^{\circ}\)[/tex]; Output: [tex]\(\frac{\sqrt{3}}{2}\)[/tex]
- Input: [tex]\(\frac{\sqrt{3}}{2}\)[/tex]; Output: [tex]\(60^{\circ}\)[/tex]