# I need your help with this problem

a) distance from plane to swimmer = 2127.66 m

b)  distance from swimmer to point D = 1928.31 m

Step-by-step explanation:

Given the question,

height at which the plane is = 900m

angle of depression = 25°

If we closely observe, the whole scene is making an right angle triangle

So, we can use trigonometry identities

### cosФ = BD / AB

cos (90-25) = 900 / AB

0.423 = 900 /AB

AB = 2127.66 m

## Related Questions

Stacy filled her 1/2 cup measuring cup seven times to have enough flour for a cake recipe. How much flour does the cake recipe call for?

all you have to do it write the equation
7 x 1/2=?

your fraction is 3 & 1/2

Carson went to pick apples at an orchard.he gave one-third of his apples to his friend Nathan.then he gave one-half of what he had to his friend Nikki.on his way home he dropped one-fourth if what he had left,so that he only had 9 for him and his family.how many apples did Carson pick originally?

36

Step-by-step explanation:

He gave 1/3 to Nathan. Now Carson has (2/3)x apples left.

He gave 1/2 of what was left to Nikki. Now Carson has (1/2)(2/3)x = (2/6)x = (1/3)x apples.

On the way home, he dropped 1/4, so he has 3/4 of the last amount he had, and the number is 9.

(3/4) * (1/3)x = 9

3/12 x = 9

1/4 x = 9

x = 36

Check:

Give 1/3 to Nathan. Now Carson has 24 apples.

Give 1/2 to Nikki. Now Carson has 12 apples.

Drop 1/4. 1/4 of 12 is 3. 12 - 3 = 9.

Hew only had 9 apples left, so 36 is correct.

36 apples

Step-by-step explanation

Step 1  = he dropped 1/4  and was left with 9

Finding 1/3 one third of 9 = 3.

Then 9 +3 = 12

Step 2 He parted with 1/2 and was left with 12

12x2=24

Step 3 He parted with 1/3 and was left with 24

= 12+ 12 + 12  = 36    Where 1/3 of 36 = 24

What is 20% of 45? ______

45×.20=9

45-9=36

What are 2 items that weigh less than 1 ounce?what are 2 items that weigh more than a ton?

A feather and a piece of mechanical pencil lead weigh less than 1 ounce.
A blue whale and an elephant weighs more than 1 ton

The line plot below shows the lengths of strings Mario used for an art project.

Number of strings = 8

Step-by-step explanation:

From , the given line plot, the number of strings used by Mario = Number of cross on the line plot

i.e. Number of strings used by Mario =  8

Now by the given line plot , the sum of all the observations will be ( multiply all values by their corresponding frequencies or crosses and add ) :-

Now, the total length of ribbon used by Mario = Sum of all the observations

Hence, the total length of ribbon used by Mario 36 feet.