Math Problem Statement

find angle x

Find angle x in the triangle with given sides and angles.

Solution

To solve for xx^\circ in the triangle:

  1. Step 1: Recall the sum of angles in a triangle The sum of the angles in any triangle is 180180^\circ: x+59+other angle=180x + 59^\circ + \text{other angle} = 180^\circ

  2. Step 2: Find the other angle Using the two sides of the triangle, 2626 and 3030, and the included angle 5959^\circ, we use the law of cosines to find the third side, followed by the third angle.

    Law of Cosines: c2=a2+b22abcos(C)c^2 = a^2 + b^2 - 2ab\cos(C) Substituting a=26a = 26, b=30b = 30, and C=59C = 59^\circ: c2=262+3022(26)(30)cos(59)c^2 = 26^2 + 30^2 - 2(26)(30)\cos(59^\circ)

    Calculate c2c^2, then use the law of sines to find the other angle.

    Let math

Given values

a = 26 # side a b = 30 # side b C = math.radians(59) # included angle in radians

Applying the Law of Cosines to find side c

c_squared = a2 + b2 - 2 * a * b * math.cos(C) c = math.sqrt(c_squared) # side opposite the given angle

Using Law of Sines to find the other angle

sin(A)/a = sin(C)/c

sin_A = (a * math.sin(C)) / c A = math.degrees(math.asin(sin_A)) # angle opposite side a

Finding the remaining angle x

x = 180 - 59From the calculations:

  1. The third side of the triangle (opposite 5959^\circ) is approximately 27.7927.79.
  2. The angle opposite side 2626 is approximately 53.3053.30^\circ.
  3. The angle xx is therefore: x1805953.30=67.70x \approx 180^\circ - 59^\circ - 53.30^\circ = 67.70^\circ

Thus, x67.70x \approx 67.70^\circ.

Would you like further details on any step, or do you have additional questions? Here are five questions related to this:

  1. How is the Law of Cosines derived and applied?
  2. Can we use the Law of Sines to directly solve for xx?
  3. What happens if a triangle has angles summing to more than (180^\

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Math Problem Analysis

Mathematical Concepts

Trigonometry
Geometry

Formulas

Law of Cosines: c² = a² + b² - 2ab cos(C)
Sum of angles in a triangle: A + B + C = 180°
Law of Sines: sin(A)/a = sin(B)/b = sin(C)/c

Theorems

Law of Cosines
Law of Sines
Triangle Angle Sum Theorem

Suitable Grade Level

Grades 9-12