18. Answer: D
Step-by-step explanation:
First, find the measure of the missing angle.
65° + 57° + x = 180°
122° + x = 180°
x = 58°
Next, match up the angles with the opposite sides:
65° ⇄ Swim
58° ⇄ Bike
57° ⇄ Run
Lastly, put them in order from least to greatest:
57° < 58° < 65°
⇒ Run < Bike < Swim
The only multiple choice option that is correct is Bike > Run.
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19. Answer: 22.3°
Step-by-step explanation:
[tex]sin\theta = \dfrac{opposite}{hypotenuse}[/tex]
[tex]sinD= \dfrac{EF}{DE}[/tex]
[tex]sinD= \dfrac{19}{50}[/tex]
[tex]D= sin^{-1}\bigg(\dfrac{19}{50}\bigg)[/tex]
D = 22.3°
