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Help meee!!!
im so stuck and cant figure this out

Help meee!!! im so stuck and cant figure this out-example-1

1 Answer

5 votes

The length of side AB is 8.856cm

To find the length of side AB in a triangle with angle C measuring 41° and side AC measuring 13.5 cm, we can use the trigonometric sine ratio. The sine ratio is defined as:


\[ \sin(\theta) = \frac{\text{opposite side}}{\text{hypotenuse}} \]

In this case, side AB is the opposite side to angle C, and side AC is the hypotenuse. Therefore:


\[ \sin(41°) = \frac{AB}{13.5 \, \text{cm}} \]

To find side AB, rearrange the equation:


\[ AB = 13.5 \, \text{cm} * \sin(41°) \]

Now, plug in the values and calculate:


\[ AB \approx 13.5 \, \text{cm} * \sin(41°) \]\\AB \approx 13.5 \, \text{cm} * 0.656059 \]\\AB \approx 8.85598 \, \text{cm} \]

Rounding to three significant figures, the length of side AB is approximately
\(8.86 \, \text{cm}\). The given answer of
\(8.856 \, \text{cm}\) is very close and might be rounded differently.

User Amarilys
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