Question

45.20

Answer 1

Answer: 2.5 units

Step-by-step explanation:

Asuming we have a triangle $XYZ$, where:

$XY=2 units$

$XZ=Y$, hence $Z=XY=2 units$

Angle $A$ for $Y$ is $A=75\°$

Angle $B$ for $Z$ is $B=50\°$

We have to apply the law of sines:

$\frac{sin A}{Y}=\frac{sin B}{Z}=\frac{sin C}{X}$

Then:

$\frac{sin 75\°}{Y}=\frac{sin 50\°}{2 units}$

Isolating $Y$:

$Y=\frac{(2units)sin 75\°}{sin 50\°}$

$Y=2.5 units$

Answer 2

Answer:

c.

Step-by-step explanation: