Solving for a side using trigonometry

Solving for a side using trigonometry
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  • Solving sides with Trigonometry
  • Welcome back to math attic with me, your host Daniel.
  • 4
  • 65°
  • a
  • b
  • How do we find a and b?
  • Easy!!! We use one fo the functions, in this case we will use one of the functions
  • Tan 65° = a/4 4 (Tan 65°) = 4 (a/4)4 (Tan 65°) = a 8.58= a
  • Tan Tao Tan=opp/adj
  • To find a, we would use Tan. Why? Because we have the adjacent and we could use that to find the opposite. 
  • 4
  • 65°
  • 8.58
  • b
  • We found a, now we will find b, using Cos.
  • With this formula, we would be able to find b. 
  • Cos 65= 4/b b (Cos 65)= 4 b (Cos 65)/Cos 65= 4/Cos 65 b= 4/Cos65 b= 9.46
  • Cos Cah Cos= adj/hyp
  • 4
  • 65°
  • 8.58
  • b
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