Questions: If (a=6 , textin). and (theta=45^circ), find the value of (c). Round your answer to the nearest hundredth.
Transcript text: If $a=6 \mathrm{in}$. and $\theta=45^{\circ}$, find the value of $c$. Round your answer to the nearest hundredth.
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Solution
Solution Steps
Step 1: Identify the Right Triangle Relationship
In a right triangle, the hypotenuse \( c \) can be found using the sine function:
\[
\sin(\theta) = \frac{a}{c}
\]
Step 2: Substitute Known Values
Given \( a = 6 \) inches and \( \theta = 45^\circ \), substitute these values into the equation:
\[
\sin(45^\circ) = \frac{6}{c}
\]
Step 3: Calculate \(\sin(45^\circ)\)
The sine of \( 45^\circ \) is \(\frac{\sqrt{2}}{2}\). Substitute this value:
\[
\frac{\sqrt{2}}{2} = \frac{6}{c}
\]
Step 4: Solve for \( c \)
Rearrange the equation to solve for \( c \):
\[
c = \frac{6 \times 2}{\sqrt{2}} = \frac{12}{\sqrt{2}}
\]
Step 5: Simplify the Expression
Simplify \(\frac{12}{\sqrt{2}}\) by multiplying the numerator and the denominator by \(\sqrt{2}\):
\[
c = \frac{12 \sqrt{2}}{2} = 6\sqrt{2}
\]
Step 6: Calculate the Numerical Value
Calculate \( 6\sqrt{2} \) to the nearest hundredth:
\[
c \approx 6 \times 1.414 = 8.49
\]
Final Answer
The value of \( c \) is approximately 8.49 inches.