Questions: Use a calculator to find the length of each side to four decimal places. a= b= Enter a number.

Use a calculator to find the length of each side to four decimal places.
a=
b=
Enter a number.
Transcript text: Use a calculator to find the length of each side to four decimal places. \[ \begin{array}{l} a= \\ b= \end{array} \] Enter a number.
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Solution

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Solution Steps

Step 1: Identify the given information

We are given a right triangle with:

  • One leg (adjacent to the 65° angle) = 24 units
  • One angle = 65°
  • The right angle = 90°
Step 2: Use trigonometric functions to find side 'a'

To find the length of side 'a' (opposite to the 65° angle), we use the tangent function: \[ \tan(65°) = \frac{a}{24} \] \[ a = 24 \times \tan(65°) \]

Step 3: Calculate side 'a'

Using a calculator: \[ \tan(65°) \approx 2.1445 \] \[ a = 24 \times 2.1445 \approx 51.468 \]

Step 4: Use trigonometric functions to find side 'b'

To find the length of side 'b' (the hypotenuse), we use the cosine function: \[ \cos(65°) = \frac{24}{b} \] \[ b = \frac{24}{\cos(65°)} \]

Step 5: Calculate side 'b'

Using a calculator: \[ \cos(65°) \approx 0.4226 \] \[ b = \frac{24}{0.4226} \approx 56.787 \]

Final Answer

  • \( a \approx 51.4680 \)
  • \( b \approx 56.7870 \)
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