Use tangent ratio to calculate angles and sides (Tan = $\frac{o}{a}$ )

Lessons

• Introduction
  What are sine, cosine and tangent?

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• 1.
  Determine each tangent ratio using a calculator
  i) $\tan 70^\circ$
  ii) $\tan-134^\circ$
  

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• 2.
  Determine the angle to the nearest degree using a a calculator
  i) $\tan \theta = 0.64$
  ii) $\tan \theta = -1.45$
  

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• 3.
  Determine the angles and sides using Tangent
  
  a)

  Find angle A and B:
  
  
  
  
  
  b)

  Find the value of "x" using tangent
  
  
  
  
  
  c)

  Find the value of "x" using tangent
  
  
  
  
  

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• 4.
  Draw and label a right triangle to illustrate tangent ratio, then calculate the angle.
  
  a)

  $\tan \theta = {5 \over 9}$
  
  
  

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