Answer:

Step-by-step explanation:
Use this to remember the trigonometry ratios:
SOH-CAH-TOA
Because:
Sine=Opposite/Hypotenuse → SOH
Cosine=Adjacent/Hypotenuse → CAH
Tangent=Opposite/Adjacent → TOA
Use the inverse of the tangent ratio since you need to find the angle measure.
:D Tehe
Similar means angles are the same
Congruent means angles and sides are the same.
Sail 1 and sail 2 have the same angles but the sides are not the same.
So sail 1 and sail 2 are similar.
Answer:
C, assuming you left off the y on the 30
Step-by-step explanation:
30(.5x-2)+40(.75y-4)
Distribute
15x-60+30y-160
Simplify
15x+30y-220
Cupcakes —> x
Flies —> y
y-x=1 ————1
x-y/2=1 ———1
y-x=x-y/2
2x=3y/2
4x=3x
x=3y/4
Substitute x in For 1
y-3y/4= 1
y/4=1
y= 4
x=3