Solve the above (Question 3).
Find angle R & N
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Answer:
5x-13+4x+4=180
5x+4x-9=180
9x=180+9
x=189/9
x=21
angleR=5x -13
=5*21-13
105-13
=92
angleN=4x+9
21*4+9
84+9
93
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