Question

Please help me I need to finish

Answer 1

The given triangle is a Right angled triangle,

By applying trigonometry :

`\boxed{\tan( \theta) = (opposite \: \: side)/(adjacent \: \: side) }`

• 
  `\tan(45 \degree) = (7)/(a)`

• 
  `1 = (7)/(a)`

• 
  `a = 7`

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`\mathrm{ ☠ \: TeeNForeveR \:☠ }`