If θ is the smallest angle in a right triangle with side lengths of 3, 4, and 5 units, then what does sin θ equal?

(1 point)
Responses

Start Fraction 3 over 4 End Fraction
Image with alt text: Start Fraction 3 over 4 End Fraction

Start Fraction 3 over 5 End Fraction
Image with alt text: Start Fraction 3 over 5 End Fraction

Start Fraction 4 over 5 End Fraction
Image with alt text: Start Fraction 4 over 5 End Fraction

Start Fraction 5 over 3 End Fraction

1 answer

In a right triangle with side lengths of 3, 4, and 5 units, the angle θ (which is the smallest angle) corresponds to the two shorter sides: 3 (opposite side) and 4 (adjacent side). We can find sin θ as follows:

The sine of an angle is defined as the ratio of the length of the opposite side to the length of the hypotenuse. In this case, we want to find sin θ, where the opposite side is 3, and the hypotenuse is 5.

So, we calculate:

\[ \sin θ = \frac{\text{opposite}}{\text{hypotenuse}} = \frac{3}{5} \]

Thus, sin θ equals \(\frac{3}{5}\). Therefore, the correct response is:

Start Fraction 3 over 5 End Fraction