Math Problem Statement

1) m ∠1 = 56°, find m ∠2. 2) m ∠1 : m ∠2 = 7 : 2, find m ∠2.

Solution

The given problem involves a right-angled triangle with specific angle measurements. Let's break down and solve the questions.

Problem 1:

You are given:

  • CAAR\overline{CA} \perp \overline{AR}, which means 2\angle 2 is a right angle (90°).
  • m1=56m \angle 1 = 56^\circ.

Since 1+2\angle 1 + \angle 2 form a right angle (because CAARCA \perp AR), their sum must be 90°.

m1+m2=90m \angle 1 + m \angle 2 = 90^\circ

Substituting the value of m1=56m \angle 1 = 56^\circ:

56+m2=9056^\circ + m \angle 2 = 90^\circ

Now solve for m2m \angle 2:

m2=9056=34m \angle 2 = 90^\circ - 56^\circ = 34^\circ

Thus, m2=34m \angle 2 = 34^\circ.

Problem 2:

You are given:

  • m1:m2=7:2m \angle 1 : m \angle 2 = 7 : 2, which is a ratio.
  • We know m1+m2=90m \angle 1 + m \angle 2 = 90^\circ since they are complementary angles.

Let m1=7xm \angle 1 = 7x and m2=2xm \angle 2 = 2x.

We can set up the equation:

7x+2x=907x + 2x = 90^\circ

Solving for xx:

9x=909x = 90^\circ x=10x = 10^\circ

Now, find m2m \angle 2:

m2=2x=2(10)=20m \angle 2 = 2x = 2(10^\circ) = 20^\circ

Thus, m2=20m \angle 2 = 20^\circ.


Would you like any further details on the steps or explanations? Here are some related questions for practice:

  1. What is the value of m1m \angle 1 in Problem 2?
  2. How are complementary angles defined?
  3. If m1=75m \angle 1 = 75^\circ, what would m2m \angle 2 be for complementary angles?
  4. In a triangle, if two angles are 45° and 45°, what type of triangle is it?
  5. Can angles greater than 90° be complementary?

Tip: For complementary angles, the sum of the two angles always equals 90°.

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Math Problem Analysis

Mathematical Concepts

Geometry
Complementary Angles
Ratios

Formulas

m ∠1 + m ∠2 = 90°
7x + 2x = 90°

Theorems

Complementary Angles Theorem

Suitable Grade Level

Grades 7-9