SummerMiiller
SummerMiiller
19-05-2017
Mathematics
contestada
can i please get the answer to this?
Respuesta :
Aishani
Aishani
19-05-2017
4x+10=90
4x=80
x=20
Why 90°? This is because the angle subtended in a semi-circle to the circumference is 90°.
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