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hol5 hol5
  • 14-01-2017
  • Mathematics
Answered

How do you work out question B

How do you work out question B class=

Verified Answer :

MeganLouise
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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