hol5
hol5
14-01-2017
Mathematics
contestada
How do you work out question B
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MeganLouise
MeganLouise
15-01-2017
Angle ODC=20°
Angle OCD=90° because line OC is the radius and when the radius meets a tangent, it is always 90°.
Angle COD=180-90-20
Angle COD=70°
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