Question

On a piece of paper, use a protractor to construct right triangle DEF with DE=4 in. , m∠D=90° , and m∠E=45° .

Answer 1

Answer: DF = 4 in

Step-by-step explanation:

Here in triangle DEF,

In which DE = 4, $m\angle D=90^{\circ}$ , and $m\angle E=45^\circ}$

Since, $tan E = \frac{FD}{DE}$

⇒ $tan 45^{\circ} = \frac{FD}{DE}$

⇒  $1 = \frac{FD}{4}$

⇒  $FD = 4$

Thus, first option is correct.

Answer 2

Answer:

It is A i had this question and it was right

Step-by-step explanation: