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Sagot :
Answers:
- x = 4
- angle CAB = 26 degrees
- angle ABC = 24 degrees
Depending on your teacher, you may or may not have to input the word "degrees" or the degree symbol.
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Explanation:
We use the remote interior angle theorem.
This says to add two interior angles, and the sum is equal to the exterior angle that is not adjacent to any of the interior ones. Hence the "remote".
(angle CAB) + (angle ABC) = exterior angle
(6x+2) + (9x-12) = 50
15x-10 = 50
15x = 50+10
15x = 60
x = 60/15
x = 4 is the first answer
We can then find the interior angles
angle CAB = 6x+2 = 6(4)+2 = 24+2 = 26 degrees is the second answer
angle ABC = 9x-12 = 9(4)-12 = 36-12 = 24 degrees is the third answer
Then notice how 26+24 = 50 to help confirm the answers.
Answer:
Step-by-step explanation:
Remark.
- The angle marked 50 degrees is an exterior angle.
- The two angles you seek, are called remote interior angles, because they are (neither of them) the supplement to the 50 degree angle.
- The theorem you use is that the two remote interior angles add to the exterior angle.
Equation
6x + 2 + 9x - 12 = 50 Combine like terms
Solution
6x + 9x + 2 - 12 = 50 Combine
15x - 10 = 50 Add 10
15x - 10 + 10 = 50 + 10 Combine
15x = 60 Divde by 15
15x/15 = 60/15
x = 4
<CAB = 6x + 2
<CAB = 6*4 + 2
<CAB = 26
<CBA = 9x - 12
<CBA = 9*4 - 12
<CBA = 24
Answer
<CAB = 26
<CBA = 24
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