All GED Math Resources
Example Questions
Example Question #21 : Complementary Angles
Angles a and b are complementary. If , find b.
Two angles are complementary if they add up to . So, we will use the following formula:
We know , so we will substitute and solve for b. We get
Example Question #22 : Complementary Angles
If two angles are complementary, and one angle is measured degrees, what must be the other angle?
Complementary angles sum up to degrees.
Simply subtract the given angle from to determine the expression.
Combine like-terms.
The answer is:
Example Question #21 : Complementary Angles
Suppose two angles are complementary. If an angle is radians, what must be the value of the other angle?
Recall that .
Complementary angles sum up to 90 degrees, or .
To find the other angle, subtract radians from radians.
The answer is:
Example Question #21 : Angle Geometry
Suppose two angles are complementary. If an angle is measured degrees, what is the other angle?
The sum of both angles will be 90 degrees since they are complementary.
Subtract the given angle from 90.
The answer is:
Example Question #23 : Complementary Angles
Two angles are complementary if they add up to:
Two angles are complementary if they add up to .
Example Question #24 : Complementary Angles
Two angles are complementary. If the first angle is , what is the value of the second angle?
Two angles are complementary if they add up to . So, we can write it as the formula:
Now, we know one angle is . So, we can substitute and solve for the other angle. So, we get
Therefore, the other angle is .
Example Question #25 : Complementary Angles
What angle is complementary to 80 degrees?
Complementary angles must add up to 90 degrees.
To find the other angle, we must subtract 80 from 90 degrees.
The answer is:
Example Question #26 : Complementary Angles
Suppose two angles are complementary. If one angle measurement is radians, what must be the other angle?
Complementary angles sum up to 90 degrees, or radians.
Subtract radians from radians.
The answer is:
Example Question #27 : Complementary Angles
Suppose two angles are complementary. If one angle measurement is 52 degrees, what is the other angle?
Complementary angles sum up to 90 degrees.
Subtract the known angle from 90.
The answer is:
Example Question #28 : Complementary Angles
Suppose two angles are complementary. What is the value of the other angle if a known angle is 43 degrees?
Complementary angles must add up to 90 degrees.
Subtract the known angle from 90.
The answer is:
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