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Find the value of the lettered angles in each of the following ( see image ).

Please show workings.

The only given Angles are 40° , 60° , 10°​

Find the value of the lettered angles in each of the following see image Please show workings The only given Angles are 40 60 10 class=

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mhanifa

Answer:

Same arc intercepted, the angles are equal

  • t = 10°
  • u = 60°
  • v = 40°

Cyclic quadrilateral has supplementary opposite angles

  • s + v + 60° + 10° = 180°
  • s + 40° = 110°
  • s = 70°

And s and r intercept same arc, therefore:

  • r = s = 70°

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