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Two adjacent angles on a straight line are in the ratio 5:4 . Find the measure of each one of these angles.?
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Two adjacent angles on a straight line are in the ratio 5:4 . Find the...
ANSWER
Let us take the value required angle as x
so, the values of given angles will be:
Value of first angle = 5x
Value of second angle = 4x 
5x+4x=108* (supplementary angles / given)
9x=108* 
therefore , x=108*/9 =20*
x=20 
thus, 5x = 5(20) = 100*
         4x = 4(20) = 80*
so, required 2 angles are : 1st angle = 100*
                                     and 2nd angle = 80*
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Two adjacent angles on a straight line are in the ratio 5:4 . Find the...
Problem: Two adjacent angles on a straight line are in the ratio 5:4. Find the measure of each one of these angles.

Solution:

Let the two adjacent angles be x and y such that x:y = 5:4.

We know that the sum of adjacent angles on a straight line is 180 degrees.

Therefore, x + y = 180

We can use the ratio x:y = 5:4 to substitute y in terms of x.

y = (4/5)x

Substituting y in the equation x + y = 180, we get:

x + (4/5)x = 180

Simplifying the above equation, we get:

(9/5)x = 180

x = (180*5)/9

x = 100

Therefore, the measure of x is 100 degrees.

Substituting the value of x in the equation y = (4/5)x, we get:

y = (4/5)*100

y = 80

Therefore, the measure of y is 80 degrees.

Answer: The measure of each angle is x = 100 degrees and y = 80 degrees.
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