The sum 18

The sum of the three angles in a triangle is 180°. Find the 3rd angle of a triangle if the 1st and 2nd angles measure 58.3° and 45.5°.

Correct answer:

C =  76.2 °

Step-by-step explanation:

A=58.3  B=45.5   A+B+C = 180°  C=180AB=18058.345.5=76.2=76°12

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