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Solve the right triangle if a = 11 and B = 809
O b= 11.1697, c = 1.9396
O b = 63.3465, C = 62.3841
O b = 62.3841, C = 63.3465
O b = 1.9396, C = 11.1697

Answer :

  • a=11
  • B=80.9°

[tex]\\ \tt\hookrightarrow tanB=\dfrac{b}{a}[/tex]

[tex]\\ \tt\hookrightarrow tan80.9=\dfrac{b}{11}[/tex]

[tex]\\ \tt\hookrightarrow b=11(6.24)=68.64[/tex]

[tex]\\ \tt\hookrightarrow cos 80.9=\dfrac{11}{c}[/tex]

[tex]\\ \tt\hookrightarrow c=\dfrac{11}{6.24}[/tex]

[tex]\\ \tt\hookrightarrow c=1.76[/tex]

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