Answer:
A. 115°
Step-by-step explanation:
180° - 65° = 115°
In all right triangles, the ratio between a leg and the hypothenuse is the sine of the angle opposite to the leg.
So, in your case, we have

In order to find XY, we have

So, the ratio for the sine is

Answer:
<h2>
A. Zero, because the discriminant is negative. </h2>
Step-by-step explanation:
I just did it.
Answer:
-5/4
Step-by-step explanation:
4x=-5
x=-5/4