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In a triangle abc angle a +b=110 angle c+a=135 then find angle a

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Answer:

angle a = 65 degrees

Explanation:

Given:

angle a +b=110

angle c+a=135

We know: Sum of angles in a triangle is 180 degrees.

a+b+c = 180

Find angle c by substituting a+b = 110

110+c = 180, subtract 110 from both sides

c= 70

Find angle a, by substituting c = 70 in c+a = 135

70+a = 135, subtract 70 from both sides

a= 65

User Mike Fielden
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