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25 votes
25 votes
Three straight lines are shown in the diagram.
310°
a
C
38%
87%

Three straight lines are shown in the diagram. 310° a C 38% 87%-example-1
User Peoray
by
2.6k points

1 Answer

18 votes
18 votes

Explanation:

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The sum of angle at a point is 360° so...

310° + a = 360°

a = 360° - 310°

a = 50°

Now...

here b and 180° are supplementary angle so ....

b = 180° - 80°

b = 100°

Again...

The sum of all angle of triangle is 180° so...

100° + 50° + c = 180°

150° + c = 180°

c = 180° - 150°

c = 30°

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Hence...the value of a is 50° , b is 100° and c is 30°...

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User Anshul Patel
by
3.0k points