The questions asks for how far down the wall does the ladder move, so to say that in another way, what is the difference between when the ladder is taller up the wall and when it is shorter up the wall.

so figure out what the height of the ladder is up the wall for each of the situations.

1) Taller

we are told the Hyp and the Adj sides of the triangle

so use SOH CAH TOA to remind how trig functions fit on the triangle sin = Opp / Hyp , Cos=Adj / Hyp , Tan = Opp / Adj so

Cos(Ф) = 7 / 25

Ф = arcCos( 7/25)

Ф = 73.739795 °

then use

Sin( 73.739795 ) = Opp / 25

25* Sin( 73.739795 ) = Opp

24 = Opp

2) Shorter

Cos(Ф) = 15 / 25

Ф = arcCos( 15 / 25 )

Ф = 53.13010 °

sin( 53.13010 ) = Opp / 25

25 * sin( 53.13010 ) = Opp

20 = Opp

now you know the two heights up the wall. so subtract the shorter from the taller

24 - 20 = 4

the ladder moves 4 feel down the wall :)

8 0

3 years ago

The pot-belly seahorse is one of the largest seahorse species and is known for having a large belly. As a part of its diets, a p

choli [55]

Answer:

9 shrimp per day.

Step-by-step explanation:

63/7=9

9*7=63

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3 years ago

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Who invented crayons

galben [10]

Alice Binney invented them.

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