Answer:
b
Step-by-step explanation:
Using the trigonometric identity
• sin²x + cos²x = 1 , hence
cosx = ± 
cosΦ > 0 for 0 < Φ < 
cosΦ =
=
=
=
→ b
Sry can you help me what is 7 3/4% as a fraction in simplest form
Answer:
<h2>The distance between points A and B is 8.5 units, approximately.</h2>
Step-by-step explanation:
In the image attached you can observe a representation of the problem.
We have to find the distance between points A and B, which have coordinates (6,0) and (0,6), respectively.
The definition of distance between to given points is

Using points A and B, the distance between is

Therefore, the distance between points A and B is 8.5 units, approximately.
Answer: SAS postulate will be use to prove Δ ABD ≅ ΔCBD
Step-by-step explanation:
Here, In ΔABC line segment BD is the perpendicular bisector of line segment AC,
Therefore, BD ⊥ AC and, AD=DC
Thus, In triangles ABD and CBD,
AD≅DC ( given)
∠ADB≅∠CDB ( Right angles)
BD≅BD ( Reflexive)
Therefore, By SAS postulate of congruence,
Δ ABD ≅ ΔCBD.