Answer:
62°
Step-by-step explanation:
Since one arm making angle x is diameter. So, by inscribed angle theorem, we have:

Answer:
BCD is the outer angle of triangle ABC
=> BCD = ABC + BAC
<=> 150⁰ = ABC + 118⁰
=> ABC = 150⁰ - 118⁰
<=> ABC = 32⁰
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√(-√2-(-√2))²+(√3-2√3)²= 3