Math Problem Statement

The measure of the supplement of an angle exceeds 4 times the measure of the complement by 9. Find the measure of the complement.

Solution

Let's break down the problem step by step:

  1. Let the angle be xx.

  2. The supplement of an angle is given by 180x180^\circ - x, and the complement of the angle is 90x90^\circ - x.

  3. According to the problem, the measure of the supplement exceeds 4 times the measure of the complement by 9. So, we set up the equation:

180x=4(90x)+9180^\circ - x = 4(90^\circ - x) + 9

  1. Now, let's solve this equation:

180x=4(90x)+9180 - x = 4(90 - x) + 9 180x=3604x+9180 - x = 360 - 4x + 9 180x=3694x180 - x = 369 - 4x

  1. Move the terms involving xx to one side and the constants to the other side:

x+4x=369180- x + 4x = 369 - 180 3x=1893x = 189

  1. Solve for xx:

x=1893=63x = \frac{189}{3} = 63

  1. The angle xx is 6363^\circ. Now, the complement of the angle is:

90x=9063=2790^\circ - x = 90^\circ - 63^\circ = 27^\circ

Thus, the measure of the complement is 2727^\circ.

Would you like further details on the solution?

Here are some related questions:

  1. What is the relationship between supplementary and complementary angles?
  2. Can you provide another example of a problem involving supplementary and complementary angles?
  3. What happens if an angle exceeds its complement by a certain value?
  4. How can you solve an equation involving multiple angles using algebra?
  5. What real-world scenarios might involve supplementary and complementary angles?

Tip: Always remember, supplementary angles add up to 180180^\circ, and complementary angles add up to 9090^\circ.

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Math Problem Analysis

Mathematical Concepts

Algebra
Supplementary Angles
Complementary Angles

Formulas

Supplement of an angle: 180° - x
Complement of an angle: 90° - x

Theorems

Relationship between supplementary and complementary angles

Suitable Grade Level

Grades 7-9