Math Problem Statement

solve this

Solve for x. Round to the nearest tenth, if necessary.

Solution

To solve for xx in this triangle, we can use trigonometric ratios. The angle at HH is given as 2727^\circ, and we have a right triangle HJI\triangle HJI with the following details:

  • H=27\angle H = 27^\circ
  • HI=6HI = 6 (the side adjacent to H\angle H)
  • x=JIx = JI (the hypotenuse)

Step-by-Step Solution

Since we are given the adjacent side (HIHI) and need to find the hypotenuse (JIJI), the appropriate trigonometric function to use is the cosine function:

cos(27)=adjacenthypotenuse=HIJI\cos(27^\circ) = \frac{\text{adjacent}}{\text{hypotenuse}} = \frac{HI}{JI}

Substitute the known values:

cos(27)=6x\cos(27^\circ) = \frac{6}{x}

Now, solve for xx:

  1. Rearrange the equation to isolate xx: x=6cos(27)x = \frac{6}{\cos(27^\circ)}

  2. Calculate cos(27)\cos(27^\circ): cos(27)0.8910\cos(27^\circ) \approx 0.8910

  3. Substitute this value to find xx: x60.89106.7x \approx \frac{6}{0.8910} \approx 6.7

Answer

x6.7x \approx 6.7

Let me know if you'd like further details or have any questions.


Related Questions:

  1. What is the value of the opposite side (JHJH) using trigonometry?
  2. How would the answer change if HIHI was a different length?
  3. What trigonometric function would be used if we were finding JHJH instead?
  4. How can you verify the answer using the Pythagorean theorem?
  5. What is the sine of 2727^\circ and how would it relate to finding other sides?

Tip: Always remember to double-check trigonometric values when rounding to ensure accuracy.

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Right Triangle Ratios
Cosine Function

Formulas

cos(θ) = adjacent / hypotenuse

Theorems

Right Triangle Trigonometry

Suitable Grade Level

Grades 9-10