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Find the missing side length, and enter your answer in the box below. If necessary, round your answer to 2 decimal places. ​

Find the missing side length and enter your answer in the box below If necessary round your answer to 2 decimal places class=

Respuesta :

lamthuong9603

Answer:

75

Step-by-step explanation:

87°

Step-by-step explanation:

We know that sum of angles of triangle is 180 ° .

  • Let as assume that the length of missing side be x.

21° + 72° + x = 180°

combine like terms

93 ° + x = 180 °

Subtract 93 ° from each side

93° - 93° + x = 180° - 93°

x = 87 °

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