13. In the given fig. if POQ is a straight line then find the value of .
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Answer:
The value of 'a' is 40 degrees
Step-by-step explanation:
Sum of a linear pair = 180 degree
- (3a - 35) +(2a + 15) = 180
- 3a + 2a +15 - 35 = 180
- 5a -20 = 180
- 5a = 180+20
- a = 200/5 = 40
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