Finding an Angle from an Equation

Sick of ads?​ Sign up for MathVids Premium
Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
4941 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson, students learn how to find the measure of an angle using complementary angles. They are given two angles and are required to find their sum, which is equal to 90 degrees. By adding and simplifying the given equations, students can then find the value of x. After finding x, students plug it into both angles to get their respective degrees. Understanding complementary angles is essential in solving this problem.

Lesson Description:

Finding the value of x using complementary angles

I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exactly how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework. I post all of my videos on YouTube, but if you are looking for other ways to interact with me and my videos you can follow me on the following pages through My Blog, Twitter, or Facebook.

Questions answered by this video:
  • What are complementary angles?
  • If I am given the measurements of two complementary angles in terms of x, then how can I find the angle measurements?
  • The measurements of two complementary angles are (7x+17) degrees and (3x-20) degrees. What are the measurements of the angles?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows how to find the measures of 2 angles when you are given the measures of the angles in terms of x, and you know the angles are complementary.