round the answers solve the triangles A = 42 degrees, B = 61 degrees, a = 12 i solved for the other 2, C and b, but for c on the answer sheet it says 17 but when solving with my calculator it gave me 18.31489... could I have made any errors or the answer sheet gave an error

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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round the answers

solve the triangles

A = 42 degrees, B = 61 degrees, a = 12

i solved for the other 2, C and b, but for c on the answer sheet it says 17 but when solving with my calculator it gave me 18.31489... could I have made any errors or the answer sheet gave an error

 

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i got those 2 already but I was looking the answer on lowercase c

the answer shown on my textbook for lowercase c says 17 but my calculator gave my 18.31489...

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