Question

No triângulo abaixo, x vale: a) 20√2 b) 10√2 c) 20 m d) 10 m e) √2 ​

Answer 1

$\Large\boxed{\begin{array}{l}\sf tg(45^\circ)=\dfrac{x}{20}\\\sf 1=\dfrac{x}{20}\\\\\sf x=20\cdot1\\\sf x=20~m\\\huge\boxed{\boxed{\boxed{\boxed{\sf\red{\maltese}\blue{~alternativa~c}}}}}\end{array}}$