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Use the tangent ratio to find the missing leg of this right triangle. Estimate your answer to two decimal places.

Use the tangent ratio to find the missing leg of this right triangle. Estimate your answer to two decimal places.

Full solution

Q. Use the tangent ratio to find the missing leg of this right triangle. Estimate your answer to two decimal places.
  1. Write Tangent Ratio Formula: Write down the tangent ratio formula, which is tan(θ)=oppositeadjacent\tan(\theta) = \frac{\text{opposite}}{\text{adjacent}}.
  2. Identify Angle and Sides: Identify the angle θ\theta and the lengths of the sides given in the problem. Let's say the angle θ\theta is 3535 degrees, the opposite side is the missing leg we need to find, and the adjacent side is 7cm7\,\text{cm}.
  3. Plug Values into Formula: Plug the values into the tangent ratio formula. So, tan(35)=missing leg7cm\tan(35^\circ) = \frac{\text{missing leg}}{7\,\text{cm}}.
  4. Calculate Tangent Value: Use a calculator to find the value of tan(35)\tan(35^\circ). Let's say tan(35)0.70\tan(35^\circ) \approx 0.70.
  5. Isolate Missing Leg: Multiply both sides by 7cm7\,\text{cm} to isolate the missing leg. So, missing leg =7cm×tan(35)7cm×0.70= 7\,\text{cm} \times \tan(35) \approx 7\,\text{cm} \times 0.70.
  6. Calculate Missing Leg Length: Calculate the approximate length of the missing leg. Missing leg 7cm×0.704.90cm.\approx 7 \, \text{cm} \times 0.70 \approx 4.90 \, \text{cm}.

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