Question

Find the unknown angle .
please help me ​

Answer 1

Answer:

$x + 90 + 30 = 180 \\ = x = 180 - 120 \\ x = 60$

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Answer 2

Answer:

x =60

Step-by-step explanation:

sum of all angles = 180

x + 90 + 30 =180

x + 120 = 180

x = 180 - 120

x = 60

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