Optimization problem with trig

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SUMMARY

The optimization problem involves finding the angle ∅ that minimizes the area of an isosceles triangle containing a rectangle with dimensions 2 cm (height) and 6 cm (width). The area of the triangle is expressed as A = 1/2 (b * h), where the base b is defined as 6 + 2x, with x representing the uncovered space on either side of the rectangle. The solution requires determining the relationship between the angle ∅ and the dimensions of the triangle to achieve minimal area.

PREREQUISITES
  • Understanding of isosceles triangle properties
  • Knowledge of optimization techniques in calculus
  • Familiarity with area calculations for geometric shapes
  • Basic trigonometry, particularly relating angles to triangle dimensions
NEXT STEPS
  • Study optimization methods in calculus, focusing on critical points and minima
  • Explore the relationship between angles and triangle dimensions in trigonometry
  • Learn about geometric transformations and their impact on area
  • Investigate the use of derivatives in finding minimum values for functions
USEFUL FOR

Students studying geometry, mathematics educators, and anyone interested in optimization problems involving geometric shapes.

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Homework Statement



An isosceles triangle has a rectangle inside of it with length 2 cm and width 6 cm. What angle ∅ will give the triangle the minimum area.

Homework Equations



A =1/2 (bh)

The Attempt at a Solution

 
Last edited:
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In your solution, what does x represent?
 
In my solution x represents the space which the rectangle does not cover.
Since the width of the rectangle is 6cm, and there are two spaces, The base of the triangle should be 6+2x.
 

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