A.) (3, -8) B.) (-4, -5) C.) (6, -15) D.) (3, -4) ???
1 answer:
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Focus on triangles DFC and DFE:
- They are both right triangles because DF is perpendicular to EC
- DC=DE
- DF is a common side
So, the two triangles are congruent. It follows that CF=FE, and in particular
And since x=3, the length of EF is
Answer:
∠ H ≈ 23°
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan H = =
=
, thus
∠ H = (
) ≈ 23° ( to the nearest degree )