Answer: Triangle ABC is a right triangle with its right angle at B. Therefore, AC is the hypotenuse of right triangle ABC, and AB and BC are the legs of right triangle ABC. According to the Pythagorean theorem,
AB=√202−162=√400−256=√144=12
Since triangle DEF is similar to triangle ABC, with vertex F corresponding to vertex C, the measure of angle∠F equals the measure of angle∠C. Therefore, sinF=sinC. From the side lengths of triangle ABC,
sinF=
oppositeside
hypotenuse
=
AB
AC
=
12
20
=
3
5
Therefore, sinF=
3
5
.
The final answer is
3
5
or 0.6.
Explanation:
A is correct
It borders the Pacific Ocean, is not in Europe, and is definitely not the largest of the Central American countries.
4.Calma , 5.avergonzados, 6. Triste , 7. emocionados , 8. sorprendidos , 9.aburrido
BARBARA: Did you see José at the party last night?
TOMÁS: No. It's strange that he didn't come, right?
BARBARA: Yes. She has always loved parties.
TOMÁS: I'm sure he'll come to the next one.
Which sentence uses the imperfect subjunctive?
It's weird that he didn't come, right?
They have always loved parties.
I'm sure he'll come to the next one.
Did you see José at the party last night?