Question

given that angel AOB is rights angle, angle AOC=x+20, angle COB=2x+10. Find the measure​

Answer 1

Step-by-step explanation:

$x + 20 + 2x + 10 = 90 \\ 3x + 30 = 90 \\ 3x = 90 - 30 \\ 3x = 60 \\ x = \frac{60}{3} \\ x = 20$

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